N 8
                                           
                                            
                                                  
                                            16  1997 . N 63
   
                          
              , 
              
                  
   
   +----------------------------------------------------------------+
    N           -
   /                                
                                                        (-
                                                       ,    
                                                       - 
                                                       )      
   +---+------------------------+-------------------------+---------
    1             2                       3                4    
   +---+------------------------+-------------------------+---------
   1.                       
                                  -           
                                :                   
                               - 1        
                                                        
                                         1    
                                6     
                                            
                                  -            
                                :                   
                               - 1        
                                                        
                                         1    
                                    2    
                                            
                                  -            
                                             
                                :                  
                                  
                                  -          
                                               
                                :                  
                                        1        
                                                                
   2.                    
                                  -         
                                , , -         
                                :                            
                               -1        
                                                             
                                2    
                                                        
                                    IV -         
                                 :             
                                      
                                                       
                                       
                                                       
                                                 
                                  -          
                                            
                                  III, II              
                                I            
                                            
                                 50   -           
                                :                    
                                      
                                                       
                                       
                                                       
                               ( III )     
                                  -         
                                    -         
                                              
                                III, II  I             
                                            
                                :                  
                                      
                                                       
                                       
                                                       
                               ( III )     
                                  -          
                                ,  -         
                                :                            
                               2    
                                           
                                , -          
                                ,   -          
                                  -69  -         
                                 -              
                                  :          
                               -1        
                                                             
                                         1  
                                                       2    
                                2    
                                                        
                                  , IV,             
                                III, II  I  -          
                                :                    
                                      
                                                       
                                       
                                                       
                                  , IV, III         
                                 II  -            
                                :                         
                                              1      
                                                       5     
                                                 
                                  -          
                                              
                                  ,            
                                              
                                 ,           
                                :                  
                               -            1      
                                                       3    
                                        1  
                                                       2    
                                                1  
                                                       2    
   +----------------------------------------------------------------
       .       ,     
    ,      :       
                                                                   
                                  -    
                                                        
                                        
                                 
   +----------------------------+-------------------------+---------
   3.  -     -            
       ;       -         
       ;      ,   -         
      ;                
                                :                       
                               -1        
                                                             
                                2    
                                                        
                                    IV -         
                                 :             
                                      
                                                       
                                       
                                                       
                                                 
                                  -            
                                 -         
                                , , -          
                                             
                                   -         
                                   -          
                                            
                                :                       
                               -1        
                                                             
                                2    
                                                        
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                         
                              IV                          
                                III        
                                                                
   4. ; -   -1        
        ;                               
         -  6     
      ;  -                                  
                                              
                                                                
   5.              1        
                                   2        
                                                     
                                    1    
                                       
                                                                
   6.                 
                                 
                                  -          
                                 :              
                                       
                                         1    
                                      
                                                       
                                       
                                                       
                                                                
   7.  ;    1        
                                 1    
                                4    
                                      1      
                                                       3    
                                        1        
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                                 
                                                                
   8. ;              -          
                                   -          
                                  -         
                                    -         
                                           
                                 :            
                                      
                                                       
                                       
                                                       
                                           
                                 :          
                                 1        
                                                                
   9.      -1        
                                                             
                                       
                                4    
                                                                
   10.            -          
                                 :                
                                    1    
                                                                
   11.  -1        
                                                             
                                         1    
                                4    
                                                                
   12. -  -1        
      ;   -                               
         -           1  
       ;  -                         2    
               4    
                                                                
   13.                  
                                 :              
                                1        
                               -         
                                                   
                                    1        
                                        1    
                                      4    
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                                                
   14.            2        
                                                     
                                4    
                                                                
   15.                          1    
                                  
                                    6     
                                                                
   16.                       
                                   -          
                                :                            
                                 2        
                                  2    
                                                                
   17.                   
                                      
                                  :              
                                  1        
                                2    
                                   -           
                                  -          
                                :                       
                                        1        
                                        1    
                                      1    
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                                 
                                              
                                              
                                :                  
                                       
                                                                
   18.                      
                                               
                                 :           
                                    2        
                                        1    
                                  2    
                                                                
   19.             -         
                                   :           
                                 1        
                                6     
                                   -         
                                 :              
                                      
                                                       
                                                                
   20.                              
                                              
                                             
                                :                        
                                6     
                                                                
   21.                      -          
                                 -            
                                :                        
                                 1        
                                      1      
                                                       3    
                                        1    
                                4    
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                                 
                                                                
   22.    -               
                 ,   -          
                                 , -         
                                             
                                :                       
                                  1        
                                   2        
                                                     
                                    1    
                                       
                                                                
   23.                
                            -          
                                :                          
                                    2        
                                   -           
                                    -          
                                :                    
                                    1    
                                            
                                             
                                :                      
                               -1        
                                                             
                                6     
                                                                
   24.                  
                  :                 
                                     1      
                                            9 
                                12    
                                            
                                                                
   25.   -              
                          ,            
                                , -          
                                   -          
                                   -          
                                    -            
                                               
                                 :         
                                - - 1        
                                                           
                                         
                                        1    
                                      1    
                                            
                                ,               
                                 -         
                                   -         
                                :                          
                                - - 1        
                                                           
                                4    
                                   -           
                                  -          
                                :                       
                                    2        
                                      2    
                                   -         
                                 :              
                                      
                                                       
                                       
                                                       
                                            
                                 -         
                                ,             
                                 :                 
                               -  2    
                                                          
                                   -           
                                  -          
                                :                       
                                        1        
                                      1    
                                                                
   26.   -   1        
                            2        
                                        1    
                               2    
                                4    
                                                                
   27. -                    
                                ,   -         
                                            
                                :                       
                                 1        
                                    2        
                                         1    
                                4    
                                   -           
                                 :                
                                  1    
                                                  
                                      2    
                                            
                                                                
   28.                               
                                  -          
                                              
                                             
                                :                   
                               -1        
                                                             
                                         1    
                                    2        
                                6     
   29. -      ,           
         -    -           
                              :                
                                  1        
                                   2    
                                                     
                                    1    
                                       
                                                                
   30.;       1        
                                              
                                            
   +----------------------------------------------------------------
       . ,           
               
                   ,   
   :                                                  
                                                                   
                                          
                                               
                                             
   +----------------------------------------------------------------+