C11112331333132311331333133313331333112211231211111133132231131211   >>    C1111233133313231133133313331333133311221123121111113313223113121   <<    C11112331333132311331333133313331333112211231211111133132231131213   >>      C11112331333132311331333133313331333112211231211111133132231131212   >>