This invention concerns a resource held in computer memory and multiple parallel processors which require {HEAD ~ simultaneous access} to {TAIL ~ the resource} 
to
This invention concerns a resource held in computer memory and multiple parallel processors which require { HEAD ~ simultaneous access } to { TAIL ~ the resource }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL