C11111333133313232233133313331333133313331312111133133312111133133313233123121   >>    C1111133313331323223313331333133313331333131211113313331211113313331323312312   <<    C11111333133313232233133313331333133313331312111133133312111133133313233123123   >>      C11111333133313232233133313331333133313331312111133133312111133133313233123122   >>