bbbbbbbb                                                          bbbbbbbb            
    ffffffffffffffff   b::::::b                                           tttt           b::::::b            
   f::::::::::::::::f  b::::::b                                        ttt:::t           b::::::b            
  f::::::::::::::::::f b::::::b                                        t:::::t           b::::::b            
  f::::::fffffff:::::f  b:::::b                                        t:::::t            b:::::b            
  f:::::f       ffffff  b:::::bbbbbbbbb         cccccccccccccccc ttttttt:::::ttttttt      b:::::bbbbbbbbb    
  f:::::f               b::::::::::::::bb     cc:::::::::::::::c t:::::::::::::::::t      b::::::::::::::bb  
 f:::::::ffffff         b::::::::::::::::b   c:::::::::::::::::c t:::::::::::::::::t      b::::::::::::::::b 
 f::::::::::::f         b:::::bbbbb:::::::b c:::::::cccccc:::::c tttttt:::::::tttttt      b:::::bbbbb:::::::b
 f::::::::::::f         b:::::b    b::::::b c::::::c     ccccccc       t:::::t            b:::::b    b::::::b
 f:::::::ffffff         b:::::b     b:::::b c:::::c                    t:::::t            b:::::b     b:::::b
  f:::::f               b:::::b     b:::::b c:::::c                    t:::::t            b:::::b     b:::::b
  f:::::f               b:::::b     b:::::b c::::::c     ccccccc       t:::::t    tttttt  b:::::b     b:::::b
 f:::::::f              b:::::bbbbbb::::::b c:::::::cccccc:::::c       t::::::tttt:::::t  b:::::bbbbbb::::::b
 f:::::::f              b::::::::::::::::b   c:::::::::::::::::c       tt::::::::::::::t  b::::::::::::::::b 
 f:::::::f              b:::::::::::::::b     cc:::::::::::::::c         tt:::::::::::tt  b:::::::::::::::b  
 fffffffff              bbbbbbbbbbbbbbbb        cccccccccccccccc           ttttttttttt    bbbbbbbbbbbbbbbb