N 7
                                                       
                                                    
                                                 
                                                  
                                            29  1997 . N 68
                          
              , 
                   
                           
   +---------------------------------------------------------------------+
    N                       
   /                           (, 
                                                )  
   +---+--------------------+----------------------------+---------------
    1          2                        3                    4       
   +---------------------------------------------------------------------
                  I.  -                      
                                                                        
    1. -                          
                          :                              
                               4          
                                                   
                               -                 
                               -                    
                                                 
                            :                           
                                       
                                                                     
    2.                           
                                                 
                              -                    
                                              
                            :                              
                                2              
                               4          
                                                 
                             :                
                                            
                                                 
                                                   
                                                                     
    3. -                          
          :                  
                                 1              
                                                 
                                           1              
                              2          
                               6           
                                                 
                                                  
                            :                                 
                                 1              
                                   1              
                               6           
                                                 
                              - -                
                             :                          
                               2          
                                                 
                             ,                 
                                                  
                              :                         
                                            
                                              
                            1              
                                              
                                              1          
                                -               
                                                
                             :                        
                             -                  
                                                       
                             -                   
                                                       
                                                      
                                                 
                             , ,                  
                             , :                 
                               2          
                                                                     
    4. -                          
       ;                              
                     :                          
                                   1              
                                                 
                                                     
                             :                                
                                   1              
                              1          
                                                 
                             ,                 
                            ,                    
                                                  
                                                   
                             :                           
                             -                  
                                                       
                                                      
                              -                 
                                                 
                             -                   
                                                  
                             -                 
                              ,                   
                            ,  -                     
                            :                                
                             -                  
                                                       
                                                      
                                       1          
                                                 
                              :                   
                                   1              
                               2          
                              1          
                                                                     
    5.                                    
                              ,                 
                               -               
                             :                     
                                       
                           -                 
                                                          
                               4          
                                                                        
                II.                      
                                                                        
    6.                        
               :                      
                             -                 
                                             1              
                                                 
                                                       
                            :                           
                                       1          
                                                                     
    7.          2          
                                                                     
    8.           -                 
                                             1              
                                                 
                                                          
                            :                           
                                            
                                                                     
    9.                                      
                              :                         
                             -                 
                                             1              
                                            
                                                                        
                              III.                                 
                                                                        
   10.                            
                                             
                                                                     
   11. -                          
        -     :                            
                       1              
                                       1        
                                                      2          
                              1          
                                                                        
               IV.                    
                                                             
                                                                        
   12. -           2              
                   2          
                                            
                                                                     
   13.                        
                                       1          
                              2          
                                                                     
   14.                             
                                     
                            :                               
                                              
                            -                 
                                       2              
                              2          
                                                  
                             :                   
                                       1          
                                                                     
   15.                            
                               :                
                                   2              
                                       1          
                              2          
                                                                     
   16.    -                 
                                        1              
                                       1          
                              2          
                                                                     
   17.                               
                                -               
                             :                             
                             -                 
                                             2              
                                       1          
                              2          
                               4          
                                                                     
   18. -                          
         -       :                   
                                      
                            2              
                                       1          
                              2          
                                                 
                             ,                     
                             :                                  
                                   2              
                                       1          
                              2          
                                                                     
   19.                                     
                              :                     
                             -                 
                                             1              
                                       1          
                              2          
                                                  
                             (-                  
                            ) :                         
                                   2              
                                       1          
                              2          
                                                                     
   20.  -                         
                                 
                   :                                 
                                   2              
                              2          
                                                  
                             :                  
                             -                  
                                                       
                                                      
                                              
                                                  
                             :                  
                                       1          
                                                 
                             ,                     
                              :                        
                                   2              
                                       1          
                               4          
                                                                     
   21. -                        
                              :               
                             -                 
                                             1              
                              2          
                                                 
                             , -                 
                             ,                   
                             :                   
                                       1          
                                                                        
                          V.                              
                                                                        
   22. -                    
                                       
                                                                     
   23. -                         
                                             
                                                   
                            :                                
                               4          
                                                 
                                                   
                            :                               
                           -                 
                                                       
                                            
                                                   
   +---------------------------------------------------------------------+