C2221232323213331311331333133313231333132313231333113223212211321   >>    C222123232321333131133133313331323133313231323133311322321221132   <<    C2221232323213331311331333133313231333132313231333113223212211323   >>      C2221232323213331311331333133313231333132313231333113223212211322   >>