The holder has a second engagement part for {HEAD ~ engagement} of the first engagement part and {TAIL ~ the first mating part} 
of
The holder has a second engagement part for { HEAD ~ engagement } of the first engagement part and { TAIL ~ the first mating part }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL