126,124,146,236,246,234,346 my picks
267 possible keys
Orginal set non reduced
012,016,017,026,027,023,036,037,024,046,047,025,056,057,067,028,068,078,029,069,079,126,127,123,136,137,124,146,147,125,156,157,167,128,168,178,129,169,179,236,237,246,247,256,257,267,268,278,269,279,234,346,347,235,356,357,367,238,368,378,239,369,379,245,456,457,467,248,468,478,249,469,479,567,258,568,578,259,569,579,678,679,289,689,789