C(12,9,6) = 22

Method of Construction: dynamic programming covering

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8  9
  1  2  3  4  5  6  7  8 10
  1  2  3  4  5  6  7  8 11
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  1  2  3  4  5  6  7  9 10
  1  2  3  4  5  6  7  9 11
  1  2  3  4  5  6  7  9 12
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  1  2  3  6  8  9 10 11 12
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  3  4  5  6  8  9 10 11 12
  2  3  4  5  8  9 10 11 12
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  2  3  6  7  8  9 10 11 12
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  1  2  5  7  8  9 10 11 12
  1  3  4  7  8  9 10 11 12