;;;;;;;;;;;;;;;;;;;;;    
    ;iiiiiiiiiiiiiiiiiii;    
    itttttttttttttttttt1;    
    ;1111111111111ttttt1;    
    ;;;;;;;;;;;;;1tttti;;    
    ;;;;;;;;;;:;1ttt1;;;;    
           ;;;itttti;;;      
          ::;1ttt1i;;;       
        ::;i1ttt1;;;         
       ::;itttti;;;          
     :::;1ttt1;;:;           
    :::i1ttti;::             
    :;ittt1;:::::::::::::    
    ;1ttt1iiiiiiiiiiiii;:    
    ;tttttttttttttttttti:    
    ;iiiiiiiiiiiiiiiiii;:    
    :::::::::::::::::::::