C111123313121111121111331333133313331323231333133313331333133112111111221123121   >>    C11112331312111112111133133313331333132323133313331333133313311211111122112312   <<    C111123313121111121111331333133313331323231333133313331333133112111111221123123   >>      C111123313121111121111331333133313331323231333133313331333133112111111221123122   >>