C111123313331323113313331333133313121111133112121111331322333311   >>    C11112331333132311331333133313331312111113311212111133132233331   <<    C111123313331323113313331333133313121111133112121111331322333313   >>      C111123313331323113313331333133313121111133112121111331322333312   >>