C111123313331323113313331333133313121111133112111133132321111311   >>    C11112331333132311331333133313331312111113311211113313232111131   <<    C111123313331323113313331333133313121111133112111133132321111313   >>      C111123313331323113313331333133313121111133112111133132321111312   >>