a circuit board having face and edge contact areas and selected connections between the face and edge contact areas, with {TAIL ~ at least some} of the face contact areas at {HEAD ~ positions} corresponding to the openings in the insulating board 
a circuit board having face and edge contact areas and selected connections between the face and edge contact areas , with { TAIL ~ at least some } of the face contact areas at { HEAD ~ positions } corresponding to the openings in the insulating board
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH