C131121333133313233213331333133313331333133313113313232332313233121   >>    C13112133313331323321333133313331333133313331311331323233231323312   <<    C131121333133313233213331333133313331333133313113313232332313233123   >>      C131121333133313233213331333133313331333133313113313232332313233122   >>