C2221232323213331311331333133313231333132313231333113221321212121   >>    C222123232321333131133133313331323133313231323133311322132121212   <<    C2221232323213331311331333133313231333132313231333113221321212123   >>      C2221232323213331311331333133313231333132313231333113221321212122   >>