       0    0    0    0    0    0    2    2    2    2    2
      10    0    0    0    0    0    2    2    2    2    2
      20    0    0    0    0    0    6    6    6    6    6
      40    0    0    0    0    0    6    6    6    6    6
      50    3    3    3    3    3    4    4    4    4    4
      60    3    3    3    3    3    4    4    4    4    4
