0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
      0, 2, 4, 6, 8, 10, 12, 14, 16, 18,
      0, 3, 6, 9, 12, 15, 18, 21, 24, 27,
      0, 4, 8, 12, 16, 20, 24, 28, 32, 36,
      0, 5, 10, 15, 20, 25, 30, 35, 40, 45,
      0, 6, 12, 18, 24, 30, 36, 42, 48, 54,
      0, 7, 14, 21, 28, 35, 42, 49, 56, 63,
      0, 8, 16, 24, 32, 40, 48, 56, 64, 72,
      0, 9, 18, 27, 36, 45, 54, 63, 72, 81