github.com/cycloss/advent-of-code@v0.0.0-20221210145555-15039b95faa6/2021/day14/day14test.txt (about) 1 NNCB 2 3 CH -> B 4 HH -> N 5 CB -> H 6 NH -> C 7 HB -> C 8 HC -> B 9 HN -> C 10 NN -> C 11 BH -> H 12 NC -> B 13 NB -> B 14 BN -> B 15 BB -> N 16 BC -> B 17 CC -> N 18 CN -> C