C13223313311212111133133313331333133313123223313231333131333131232323213121   >>    C1322331331121211113313331333133313331312322331323133313133313123232321312   <<    C13223313311212111133133313331333133313123223313231333131333131232323213123   >>      C13223313311212111133133313331333133313123223313231333131333131232323213122   >>