C111123313121111121111331333133313331323221211113313231333112211231233131   >>    C11112331312111112111133133313331333132322121111331323133311221123123313   <<    C111123313121111121111331333133313331323221211113313231333112211231233133   >>      C111123313121111121111331333133313331323221211113313231333112211231233132   >>