C11112331333132311331333133313331333112211231211113313113313132311321   >>    C1111233133313231133133313331333133311221123121111331311331313231132   <<    C11112331333132311331333133313331333112211231211113313113313132311323   >>      C11112331333132311331333133313331333112211231211113313113313132311322   >>