N 14
                                           
                                            
                                                  
                                            25  1997 . N 66
   
                          
              , 
              ,
                
   
   +---------------------------------------------------------------------+
    N                               
   /                                  
                                                       
                                                           (, 
                                                           )
   +---+--------------------+---------------------------------+----------
    1          2                          3                    4     
   +---------------------------------------------------------------------
           1.  ,                 
                                                 
                                                                        
   1.             1         
                          4     
                                                         
                                                                     
   2.                    1         
                                        
                                                               
                                                                     
   3.  -                         1         
                    2     
       -                                              
      ;                                              
        ;                                              
                                                   
      ;                                                  
                                                  
                                                         
                                                                     
   4.  -                       
                  :          
                                        1         
                                                  
                               :                      
                                     2         
                                        6      
                                                                     
   5.                           
                   ,                   
                                                 
                              :                          
                                      1         
                                                   
                                                 
                                :               
                             1         
                                  12        
                                                                     
   6.                            
                               :                      
                                      1         
                                        1         
                                            1     
                                            
                                                 
                             :                               
                                     1         
                                                                     
   7.  -            1         
                                
                               ,                  
                              :                           
                                           1         
                                
                                     1         
                                                                     
   8.                               
                      -17              
                              :                                
                                        1         
                                            
                                           
                                                 
                              ,  -            
                                                
                              :                               
                                                  
                                               1         
                                   2     
                                                                     
   9.                   1         
                                                              
                                                                     
   10.                           
                                         
                              :                          
                                     2         
                                                                     
   11.                          1         
                                      
                          2     
                                                     
                                                         
                                                                     
   12.                            4     
                                                                     
   13. -                     
              :                      
                             1         
                                          
                                            1     
                                            
                                                                     
   14. ,                 1         
      ,              6      
                                                              
                                                                        
           2.                 
                                                                        
   15.            1         
        -           12     
                                        
                                           
                                               
                              :                               
                                           1         
                                                1     
                                    12     
                                                                     
   16.                              1         
                                        4     
                                                                     
   17.              1         
      ;                  4         
                                                      
                                                                     
   18.                       2         
                                    12     
                                                 
                                                                     
   19.                      
                                 
                                                  1         
                                                    1     
                                        6      
                                                 
                                                                     
   20.              4     
                                                                     
   21.              -          
                      :              
                                      
                                                                     
   22.                               
                         :             
                                             1         
                                        6      
                                                 
                                                                     
   23.                     1         
        ;               12     
        ,                           
                                                     
                                                                     
   24.                    1         
                                                         
                                                                     
   25.                                  
                                        
                                                 
                                                              
                                                                     
   26.        1         
                            6      
   +---------------------------------------------------------------------+