{HEAD ~ A subsidiary object} is to provide {TAIL ~ a shock absorber} which will accommodate movement in a vertical plane  
{ HEAD ~ A subsidiary object } is to provide { TAIL ~ a shock absorber } which will accommodate movement in a vertical plane
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH