C11111333133313232233133313331333133313331312111133133323211331   >>    C1111133313331323223313331333133313331333131211113313332321133   <<    C11111333133313232233133313331333133313331312111133133323211333   >>      C11111333133313232233133313331333133313331312111133133323211332   >>