ffff   fff                 
  ffff  ff                
    fffff                  
   ff   ffff                
  ff    f  f               
   fff  fffff cccccc  cccc 
   fffffffffff c  cc  c  c 
  fffff fff fffcc  c  cc c 
 ffff fffffff   cccc   c c 
  fffffffff  cccc    c c c 
    fffff  ccc  cccccc c c 
      ff       cc  c   c c 
            ccccc  ccccc c 
         cccc c  c       c 
            ccc  ccccccccc 
            c        c     
            cccccccccc     
