C11112331312111112111133133313331333133313331333133313311211113313132131121   >>    C1111233131211111211113313331333133313331333133313331331121111331313213112   <<    C11112331312111112111133133313331333133313331333133313311211113313132131123   >>      C11112331312111112111133133313331333133313331333133313311211113313132131122   >>