C1311213331333132332133313331333133313331333133313331333133313112133311231   >>    C131121333133313233213331333133313331333133313331333133313331311213331123   <<    C1311213331333132332133313331333133313331333133313331333133313112133311233   >>      C1311213331333132332133313331333133313331333133313331333133313112133311232   >>