{TAIL ~ Other polyimides} can be patterned by selective etching of {HEAD ~ a conformal film} or by casting 
{ TAIL ~ Other polyimides } can be patterned by selective etching of { HEAD ~ a conformal film } or by casting
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH