Fluid power mechanisms are disposed on {HEAD ~ the support structure} for moving {TAIL ~ the support structure} upwardly and downwardly relative to the ground 
for moving
Fluid power mechanisms are disposed on { HEAD ~ the support structure } for moving { TAIL ~ the support structure } upwardly and downwardly relative to the ground
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH