       0    0    0    0    0    0    6    7    7    7    7
      10    0    0    0    0    0    7    7    7    8    8
      20    0    0    0    0    0    7    8    8    8    8
      30    0    0    0    0    1    8    8    8    8    8
      40    0    0    0    1    1    8    8    8    8    8
      50    1    1    1    1    2    8    8    8    8    8
      60    1    1    1    1    2    8    8    8    8    8
