The slide element has a tongue upwardly extending from the front end thereof and provided with {HEAD ~ an inclined outer surface} which abuts {TAIL ~ the front end} of the cover member 
abuts
The slide element has a tongue upwardly extending from the front end thereof and provided with { HEAD ~ an inclined outer surface } which abuts { TAIL ~ the front end } of the cover member
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH