{HEAD ~ This invention} relates to {TAIL ~ a chair} to be used by workers such as programmers who spend long periods of time in chairs and particularly to a chair that provides knee restraints together with lower back restraint that relieve strain on the back 
relates to
{ HEAD ~ This invention } relates to { TAIL ~ a chair } to be used by workers such as programmers who spend long periods of time in chairs and particularly to a chair that provides knee restraints together with lower back restraint that relieve strain on the back
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH