{HEAD ~ A support arm} which utilizes {TAIL ~ a material} with material properties such that the support arm may be easily placed into a position within a range, yet at the edges of this range have elastic properties 
utilizes
{ HEAD ~ A support arm } which utilizes { TAIL ~ a material } with material properties such that the support arm may be easily placed into a position within a range , yet at the edges of this range have elastic properties
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH