C11111333133313232233133313331333133313331312111133133312111133133313233213311   >>    C1111133313331323223313331333133313331333131211113313331211113313331323321331   <<    C11111333133313232233133313331333133313331312111133133312111133133313233213313   >>      C11111333133313232233133313331333133313331312111133133312111133133313233213312   >>