The housing may have {HEAD ~ an interior} in or through which the point of contact may be accessed and {TAIL ~ an anterior opening} for access to the interior 
The housing may have { HEAD ~ an interior } in or through which the point of contact may be accessed and { TAIL ~ an anterior opening } for access to the interior
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH