C11111333133313232233133313331333133313331312111133133312111133133313113211311   >>    C1111133313331323223313331333133313331333131211113313331211113313331311321131   <<    C11111333133313232233133313331333133313331312111133133312111133133313113211313   >>      C11111333133313232233133313331333133313331312111133133312111133133313113211312   >>