C111123313331323113313331333133313121111133112111133132333133311231   >>    C11112331333132311331333133313331312111113311211113313233313331123   <<    C111123313331323113313331333133313121111133112111133132333133311233   >>      C111123313331323113313331333133313121111133112111133132333133311232   >>