A printer includes {TAIL ~ a paper feeder}, toner, a photo conductor, and {HEAD ~ various mechanisms} 
A printer includes { TAIL ~ a paper feeder } , toner , a photo conductor , and { HEAD ~ various mechanisms }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD