                           16                   
                         8-10              18                   20-25             14.5             
                      
       1.                                                 
       2.                                 
       3.                                    
       4.                       3500          1500                         
       5.                                                          
                                         
       1.                    

       2.                             
       3.              
       4.                         
       5.                       
       6.                          