{HEAD ~ The sunglasses} 1, wherein {TAIL ~ the plug in projection} forms a stop for the nose piece 
wherein
{ HEAD ~ The sunglasses } 1 , wherein { TAIL ~ the plug in projection } forms a stop for the nose piece
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH