C131121333133313233213331333133313331333133313231323311331333131221   >>    C13112133313331323321333133313331333133313331323132331133133313122   <<    C131121333133313233213331333133313331333133313231323311331333131223   >>      C131121333133313233213331333133313331333133313231323311331333131222   >>