The lubricant compounds and {HEAD ~ methods} of {TAIL ~ manufacture} are described at length in certain prior art 
of
The lubricant compounds and { HEAD ~ methods } of { TAIL ~ manufacture } are described at length in certain prior art
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH