C111123313331323113313331333133313121111331322211121111133313231211   >>    C11112331333132311331333133313331312111133132221112111113331323121   <<    C111123313331323113313331333133313121111331322211121111133313231213   >>      C111123313331323113313331333133313121111331322211121111133313231212   >>