C1311213331333132332133313331333133313331333133313331333132311233132221   >>    C131121333133313233213331333133313331333133313331333133313231123313222   <<    C1311213331333132332133313331333133313331333133313331333132311233132223   >>      C1311213331333132332133313331333133313331333133313331333132311233132222   >>