{HEAD ~ Lips} 38 define {TAIL ~ an insertion opening} 42 therebetween through which electrical receptacle 16 may be inserted into C shaped channel 18 
define
{ HEAD ~ Lips } 38 define { TAIL ~ an insertion opening } 42 therebetween through which electrical receptacle 16 may be inserted into C shaped channel 18
HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH