C1311213331333132332133313331333133313331333133313331311332221311   >>    C131121333133313233213331333133313331333133313331333131133222131   <<    C1311213331333132332133313331333133313331333133313331311332221313   >>      C1311213331333132332133313331333133313331333133313331311332221312   >>