C11112331312111112111133133313331333133112111113231333132233121   >>    C1111233131211111211113313331333133313311211111323133313223312   <<    C11112331312111112111133133313331333133112111113231333132233123   >>      C11112331312111112111133133313331333133112111113231333132233122   >>