C11111333133313232233133313331333133313331312111133133313111333121   >>    C1111133313331323223313331333133313331333131211113313331311133312   <<    C11111333133313232233133313331333133313331312111133133313111333123   >>      C11111333133313232233133313331333133313331312111133133313111333122   >>