C2221232323213331311331333133313231333132313231333113223222223321   >>    C222123232321333131133133313331323133313231323133311322322222332   <<    C2221232323213331311331333133313231333132313231333113223222223323   >>      C2221232323213331311331333133313231333132313231333113223222223322   >>