The coupling comprises {HEAD ~ a housing} having {TAIL ~ a first end}, a second end and a body 
having
The coupling comprises { HEAD ~ a housing } having { TAIL ~ a first end } , a second end and a body
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH