iiiiiiii          
          ii1tttt1ii         
          ;1ffffffi;         
         ;itffffffti;        
        ;;1fff11fff1;;       
       ; iffft;itffti;       
       ;itffti;;itff1;;      
      ;;1ttti;;;;1ttti;;     
     :;ittttiiii;itttt;:     
     :ittttttttttttttt1;:    
    :;1ttt111111111tttti,:   
   ::ittt1;;;;;;;;;ittt1;:   
  :;;1tt1;::::::::::ittti::  
  :;1111i::        :;1111;:  
  :i111i::         ::i1111:  
  :;;;;::           ::;;;;:  
  :::::::            ::::::