- ,
()










  1
    
  

   
                  
                 __________   
                    ______________________  20___ .
                       ( )
   
   +--------------------------------------------------------------------+
                  
   /                                               
                  +-----------+---------------------------------------
                     /      I        II      III       IV   
   +---+------------+---+-------+--------+----------+----------+--------
    1      2       3    4       5        6        7        8    
   +---+------------+---+-------+--------+----------+----------+--------
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
      :                                                    
                                                                
   
                      
   
   +--------------------------------------------------------------------+
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
                                                                
   +---+------------+---+-------+--------+----------+----------+--------
      :                                                    
   +--------------------------------------------------------------------+
   
     ________________   ________________
                                   ()                 ()
   
   
       ..                                        ..