C11111333133313232233133313331333131133131331121111331311331111   >>    C1111133313331323223313331333133313113313133112111133131133111   <<    C11111333133313232233133313331333131133131331121111331311331113   >>      C11111333133313232233133313331333131133131331121111331311331112   >>