C11112331312111112111133133313331333132323133313331312113313232111211   >>    C1111233131211111211113313331333133313232313331333131211331323211121   <<    C11112331312111112111133133313331333132323133313331312113313232111213   >>      C11112331312111112111133133313331333132323133313331312113313232111212   >>