C2221232323213331311331333133313231333132313231333113221222311121   >>    C222123232321333131133133313331323133313231323133311322122231112   <<    C2221232323213331311331333133313231333132313231333113221222311123   >>      C2221232323213331311331333133313231333132313231333113221222311122   >>