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#Pyth, 30 25 bytes
jb.eu_GkbceQs*R/*FQ4"EDMC
Live demo and all test cases.
Cut off 5 bytes thanks to @Jakube!
Same algorithm as my K answer...but a lot shorter.
30-byte version:
jb.e?%k2_bbcjkm*/*FQ4d"EDMC"hQ
Live demo and all test cases for 50-byte version.
#Pyth, 3030 25 bytes
jb.e?%k2_bbcjkm*eu_GkbceQs*R/*FQ4d"EDMC"hQ*FQ4"EDMC
Same algorithm as my K answer...but 31 bytesa lot shorter.
#Pyth, 30 bytes
Same algorithm as my K answer...but 31 bytes shorter.
jb.e?%k2_bbcjkm*/*FQ4d"EDMS"hQ*FQ4d"EDMC"hQ
Live demo and all test casesLive demo and all test cases.
jb.e?%k2_bbcjkm*/*FQ4d"EDMS"hQ
