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