C131121333133313233213331333133313331333133313331333133313331311323323131   >>    C13112133313331323321333133313331333133313331333133313331333131132332313   <<    C131121333133313233213331333133313331333133313331333133313331311323323133   >>      C131121333133313233213331333133313331333133313331333133313331311323323132   >>