A strip of {HEAD ~ staples} 11 sits in {TAIL ~ straddled relationship} on the staple guide 12 
A strip of { HEAD ~ staples } 11 sits in { TAIL ~ straddled relationship } on the staple guide 12
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH