C2221232323213331311331333133313231333132313231333113221223133323321   >>    C222123232321333131133133313331323133313231323133311322122313332332   <<    C2221232323213331311331333133313231333132313231333113221223133323323   >>      C2221232323213331311331333133313231333132313231333113221223133323322   >>