C111123313121111121111331333133313331333131333133313331333133112111133213121   >>    C11112331312111112111133133313331333133313133313331333133313311211113321312   <<    C111123313121111121111331333133313331333131333133313331333133112111133213123   >>      C111123313121111121111331333133313331333131333133313331333133112111133213122   >>