In another aspect, the viewer may watch {HEAD ~ programs} currently being shown on {TAIL ~ the television}, while he or she browses through the program guide 
shown on
In another aspect , the viewer may watch { HEAD ~ programs } currently being shown on { TAIL ~ the television } , while he or she browses through the program guide
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH