C3132121111331312113313331333133313231323133313331333132211233133311211312121   >>    C313212111133131211331333133313331323132313331333133313221123313331121131212   <<    C3132121111331312113313331333133313231323133313331333132211233133311211312123   >>      C3132121111331312113313331333133313231323133313331333132211233133311211312122   >>