In {TAIL ~ the exemplary embodiment}, the tube is a nuclear fuel rod and {HEAD ~ the internal components} are fuel pellets 
In
In { TAIL ~ the exemplary embodiment } , the tube is a nuclear fuel rod and { HEAD ~ the internal components } are fuel pellets
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH