C2221232323213331311331333133313331323132313331333223312232331321221   >>    C222123232321333131133133313331333132313231333133322331223233132122   <<    C2221232323213331311331333133313331323132313331333223312232331321223   >>      C2221232323213331311331333133313331323132313331333223312232331321222   >>