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