C13223313311212111133133313331333132322132322121111331312312121   >>    C1322331331121211113313331333133313232213232212111133131231212   <<    C13223313311212111133133313331333132322132322121111331312312123   >>      C13223313311212111133133313331333132322132322121111331312312122   >>