C11112331312111112111133133313331333132322121111332213112113121   >>    C1111233131211111211113313331333133313232212111133221311211312   <<    C11112331312111112111133133313331333132322121111332213112113123   >>      C11112331312111112111133133313331333132322121111332213112113122   >>