A frame of a pair of glasses has {HEAD ~ a pair} of eye rims with {TAIL ~ front surface} and nasal regions which are connected together by a bridge with a front surface and a nasal region 
with
A frame of a pair of glasses has { HEAD ~ a pair } of eye rims with { TAIL ~ front surface } and nasal regions which are connected together by a bridge with a front surface and a nasal region
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH