C3123223313331322121111331333133313331311331133133313331312111112212221   >>    C312322331333132212111133133313331333131133113313331333131211111221222   <<    C3123223313331322121111331333133313331311331133133313331312111112212223   >>      C3123223313331322121111331333133313331311331133133313331312111112212222   >>