C1311213331333132332133313331333133313331333131133133312111112221211   >>    C131121333133313233213331333133313331333133313113313331211111222121   <<    C1311213331333132332133313331333133313331333131133133312111112221213   >>      C1311213331333132332133313331333133313331333131133133312111112221212   >>