;;;;;;     ;;;ii;;;     
     i1111;   ;;;;11111;     
     itttt;  ;;;itttt1;;     
     itttt;;;;;1tttti;;;     
     itttt;;;itttt1;;;;      
     ;tttt;;1tttti;;;        
     ;ttttitttt1;;;;         
     ;tttttttti;;;           
     ;ttttttt1;:::           
     ;ttt11ttt1i:::          
     ;ttt1;;1ttti;::         
     ;1tt1::;ittt1;;::       
     ;1111::::i1111i:::      
     ;1111: :::;1111i:::     
     ;1111:   :::i1111;:     
     :;;;;:    :::;;;;;:     
     ::::::      :::::::