C11112331333132311331333133313331333112211231211111211111121123311231   >>    C1111233133313231133133313331333133311221123121111121111112112331123   <<    C11112331333132311331333133313331333112211231211111211111121123311233   >>      C11112331333132311331333133313331333112211231211111211111121123311232   >>