C11112331333132311331333133313331333112211231211113313113313231323321312231   >>    C1111233133313231133133313331333133311221123121111331311331323132332131223   <<    C11112331333132311331333133313331333112211231211113313113313231323321312233   >>      C11112331333132311331333133313331333112211231211113313113313231323321312232   >>