C1311213331333132332133313331333133313331323331333133313233313221   >>    C131121333133313233213331333133313331333132333133313331323331322   <<    C1311213331333132332133313331333133313331323331333133313233313223   >>      C1311213331333132332133313331333133313331323331333133313233313222   >>