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