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