       0    0    0    0    0    0    7    7    7    7    7
      10    0    0    0    0    0    7    8    8    8    8
      20    0    0    0    0    0    8    8    8    8    8
      30    1    1    1    1    1    8    8    8    8    8
      40    1    1    1    2    2    8    8    8    8    8
      50    2    2    2    2    2    8    8    8    8    8
      60    3    3    3    4    4    8    8    8    8    8
