{HEAD ~ A radially outward surface} of {TAIL ~ each} of the bars is connected to a respective radially inner surface of each of the rings 
{ HEAD ~ A radially outward surface } of { TAIL ~ each } of the bars is connected to a respective radially inner surface of each of the rings
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH