C11111333133313232233133313331333133313331312111133133313223133231   >>    C1111133313331323223313331333133313331333131211113313331322313323   <<    C11111333133313232233133313331333133313331312111133133313223133233   >>      C11111333133313232233133313331333133313331312111133133313223133232   >>