C2221232323213331311331333133313231333132313232222121221222323321   >>    C222123232321333131133133313331323133313231323222212122122232332   <<    C2221232323213331311331333133313231333132313232222121221222323323   >>      C2221232323213331311331333133313231333132313232222121221222323322   >>