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