iiiiiiiiiiiiiiiii   
       iiiii111tttt111iiii   
     ;;;i1tfffffffffffftti   
    ;;i1tfffftt11111tttffi   
    ;itfffftii;iiiiii;ii1i   
    ;1fffti;;;;ii  ii;;;;i   
    itffti;;;  ;;;;;;;;;;;   
    itttt;;    ;;;;;;;;;;;   
    1ttt1;     ;111111111;   
    ittt1;:    ;ttttttttt;   
    ;tttt;:::  ;;;;;;1ttt;   
    :ittt1;::::::::::itt1;   
    ::i1tt1i;;:;:::::itt1;   
     ::;1111111iiiiii1111;   
     ::::;i1111111111111i:   
       :::,::;;;;;;;;;::::   
         :::::::::::::::::