C312312111111331312111133133313331333121111121133133313232233111221   >>    C31231211111133131211113313331333133312111112113313331323223311122   <<    C312312111111331312111133133313331333121111121133133313232233111223   >>      C312312111111331312111133133313331333121111121133133313232233111222   >>