C312312111111331312111133133313331333133313232233133313331333133313112123331   >>    C31231211111133131211113313331333133313331323223313331333133313331311212333   <<    C312312111111331312111133133313331333133313232233133313331333133313112123333   >>      C312312111111331312111133133313331333133313232233133313331333133313112123332   >>