The portion of this lock range in which {HEAD ~ the width} of {TAIL ~ the lock range} decreases is positively utilized 
of
The portion of this lock range in which { HEAD ~ the width } of { TAIL ~ the lock range } decreases is positively utilized
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH