C3123121111331312121111331333133313231333132331211113313113313232213221211   >>    C312312111133131212111133133313331323133313233121111331311331323221322121   <<    C3123121111331312121111331333133313231333132331211113313113313232213221213   >>      C3123121111331312121111331333133313231333132331211113313113313232213221212   >>