C11111333133313232233133313331333133313331312111133133311331313311   >>    C1111133313331323223313331333133313331333131211113313331133131331   <<    C11111333133313232233133313331333133313331312111133133311331313313   >>      C11111333133313232233133313331333133313331312111133133311331313312   >>