C11112331312111112111133133313331333132322121111331323221223131   >>    C1111233131211111211113313331333133313232212111133132322122313   <<    C11112331312111112111133133313331333132322121111331323221223133   >>      C11112331312111112111133133313331333132322121111331323221223132   >>