C131121333133313233213331333133313331333133313231311331333123221   >>    C13112133313331323321333133313331333133313331323131133133312322   <<    C131121333133313233213331333133313331333133313231311331333123223   >>      C131121333133313233213331333133313331333133313231311331333123222   >>