{HEAD ~ a rod} having one end loosely connected with {TAIL ~ said flange} and movable therein, 
{ HEAD ~ a rod } having one end loosely connected with { TAIL ~ said flange } and movable therein ,
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH