{HEAD ~ The multilayer circuit board} has {TAIL ~ contact areas} at positions corresponding to the openings in the insulating board 
{ HEAD ~ The multilayer circuit board } has { TAIL ~ contact areas } at positions corresponding to the openings in the insulating board
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH