C2221232323213331311331333133313231333132313232313123232213112112331   >>    C222123232321333131133133313331323133313231323231312323221311211233   <<    C2221232323213331311331333133313231333132313232313123232213112112333   >>      C2221232323213331311331333133313231333132313232313123232213112112332   >>