C131121333133313233213331333133313331333133313231311331333132231323221   >>    C13112133313331323321333133313331333133313331323131133133313223132322   <<    C131121333133313233213331333133313331333133313231311331333132231323223   >>      C131121333133313233213331333133313331333133313231311331333132231323222   >>