{HEAD ~ A pair} of links are pivotally coupled to {TAIL ~ the torsion arms} via a pair of pivot mounts 
are pivotally coupled to
{ HEAD ~ A pair } of links are pivotally coupled to { TAIL ~ the torsion arms } via a pair of pivot mounts
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH