C2221232323213331311331333133313231333132313232313123232322323321   >>    C222123232321333131133133313331323133313231323231312323232232332   <<    C2221232323213331311331333133313231333132313232313123232322323323   >>      C2221232323213331311331333133313231333132313232313123232322323322   >>