C111123313331323113313331333133313121111133112111133132321111312231   >>    C11112331333132311331333133313331312111113311211113313232111131223   <<    C111123313331323113313331333133313121111133112111133132321111312233   >>      C111123313331323113313331333133313121111133112111133132321111312232   >>