M   M  AAAAA  X   X  N   N  FFFFF  L      AAAAA  X   X  L     
MM MM  A   A   X X   NN  N  F      L      A   A   X X   L     
M M M  AAAAA    X    N N N  FFFF   L      AAAAA    X    L     
M   M  A   A   X X   N  NN  F      L      A   A   X X   L     
M   M  A   A  X   X  N   N  F      LLLLL  A   A  X   X  LLLLL