- ,
()




                             -  No. 3
             c No. 55 "   ",
           No. 56 " ", No. 57 "  "
   
   +---------------------------------------------------------------------------------------------------+
   -  55     56     57   
      (No. .+---------------------------+---------------------------+---------------------------
    No.  -    No.    No.  ..  No.   No.   ..  No.    No.  ..
                                                                                    
   +-----+---------+-------+------+------+-----+-------+------+------+-----+-------+------+------+-----
                                                                                         
   +-----+---------+-------+------+------+-----+-------+------+------+-----+-------+------+------+-----
                                                                                         
   +-----+---------+-------+------+------+-----+-------+------+------+-----+-------+------+------+-----
                                                                                         
   +-----+---------+-------+------+------+-----+-------+------+------+-----+-------+------+------+-----
                                                                                         
   +---------------+-------+------+------+-----+-------+------+------+-----+-------+------+------+-----
                                                                                     
   +---------------------------------------------------------------------------------------------------
           No. 55                  No. 56              No. 57  
      -        .          -        .       -      .
      -         .          -         .       -       .
   +---------------------------------------------------------------------------------------------------+
   
                             
                           No. 55  No. 56
   
   +--------------------------------------------------------------------+
                          No. 55                                
   +--------------------------------------------------------------------
   -        
      -     +-------------------+-------------------    
       No.- No.- No.- No.- 
                        
                      -    -    -    -          
                                                
                                            
   +--------+-----+------+----+----+----+----+----+----+----+----+------
                                                            
   +--------+-----+------+----+----+----+----+----+----+----+----+------
                                                            
   +--------------+------+----+----+----+----+----+----+----+----+------
                                                 
   No. 55                                                    
   +--------------------------------------------------------------------
                            No. 56                              
   +--------------------------------------------------------------------
                                                            
   +--------+-----+------+----+----+----+----+----+----+----+----+------
                                                            
   +--------------+------+----+----+----+----+----+----+----+----+------
                                                 
   No. 56                                                    
   +--------------------------------------------------------------------+