C11112331312111112111133133313331333133313331333133313311211111133132322311   >>    C1111233131211111211113313331333133313331333133313331331121111113313232231   <<    C11112331312111112111133133313331333133313331333133313311211111133132322313   >>      C11112331312111112111133133313331333133313331333133313311211111133132322312   >>