C2221232323213331311331333133313231333132313231333113221313122321   >>    C222123232321333131133133313331323133313231323133311322131312232   <<    C2221232323213331311331333133313231333132313231333113221313122323   >>      C2221232323213331311331333133313231333132313231333113221313122322   >>