At least one of {HEAD ~ the first and second extensions} is configured as {TAIL ~ a resilient member} configured to make electrical contact with a contact pad of the insertion member 
is configured as
At least one of { HEAD ~ the first and second extensions } is configured as { TAIL ~ a resilient member } configured to make electrical contact with a contact pad of the insertion member
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH