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