Yet another known method uses a thermal gradient to ensure {TAIL ~ selective adherence} of the lens in {HEAD ~ the mold} 
Yet another known method uses a thermal gradient to ensure { TAIL ~ selective adherence } of the lens in { HEAD ~ the mold }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD