The relative locations of the cylinder and piston are controlled by {HEAD ~ a liquid filled bladder} which is located inside {TAIL ~ the cylinder}  
is located inside
The relative locations of the cylinder and piston are controlled by { HEAD ~ a liquid filled bladder } which is located inside { TAIL ~ the cylinder }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH