C111123313121111121111331333133313331323221211113313231333112211232233131   >>    C11112331312111112111133133313331333132322121111331323133311221123223313   <<    C111123313121111121111331333133313331323221211113313231333112211232233133   >>      C111123313121111121111331333133313331323221211113313231333112211232233132   >>