C11111333133313232233133313331333133313331312111133133312111133133313113313121   >>    C1111133313331323223313331333133313331333131211113313331211113313331311331312   <<    C11111333133313232233133313331333133313331312111133133312111133133313113313123   >>      C11111333133313232233133313331333133313331312111133133312111133133313113313122   >>