C2221232323213331311331333133313231333132313221323131213331232211   >>    C222123232321333131133133313331323133313231322132313121333123221   <<    C2221232323213331311331333133313231333132313221323131213331232213   >>      C2221232323213331311331333133313231333132313221323131213331232212   >>