This is performed by identifying conditions necessary to change a coded syntax element without disrupting {HEAD ~ the interpretation} of {TAIL ~ subsequent coded elements} 
of
This is performed by identifying conditions necessary to change a coded syntax element without disrupting { HEAD ~ the interpretation } of { TAIL ~ subsequent coded elements }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL