{HEAD ~ an insulating board} having {TAIL ~ a plurality} of openings therethrough, with at least some of the openings at positions corresponding to the IC chip contact areas 
having
{ HEAD ~ an insulating board } having { TAIL ~ a plurality } of openings therethrough , with at least some of the openings at positions corresponding to the IC chip contact areas
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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