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build_0_21 16 16
build_0_6 2 5
build_12_13 9 1
build_12_5 4 3
build_13_14 2 0
build_14_16 2 0
build_21_12 16 4
build_2_3 13 5
build_3_4 12 3
build_4_5 12 3
build_6_7 2 5
build_7_5 2 5
