C2221232323213331311331333133313231333132313221323131213132331121   >>    C222123232321333131133133313331323133313231322132313121313233112   <<    C2221232323213331311331333133313231333132313221323131213132331123   >>      C2221232323213331311331333133313231333132313221323131213132331122   >>