{HEAD ~ Substantially all} of the functional coating is removed from {TAIL ~ a peripheral region} of the first major surface while substantially all of the functional coating is simultaneously removed from a peripheral region of the second major surface 
is removed from
{ HEAD ~ Substantially all } of the functional coating is removed from { TAIL ~ a peripheral region } of the first major surface while substantially all of the functional coating is simultaneously removed from a peripheral region of the second major surface
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH