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