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say display 10, '%3d', ^1000 .grep: { .comb.Bag{'1'} == 2 }; sub display { cache $^c; "{+$c} matching:\n" ~ $c.batch($^a)».fmt($^b).join: "\n" }
27 matching: 11 101 110 112 113 114 115 116 117 118 119 121 131 141 151 161 171 181 191 211 311 411 511 611 711 811 911