{HEAD ~ The slide element} 8 also has at the rear end thereof {TAIL ~ an extension} 13 extending through the cut 6 into the recess 7 where the extension 13 is enlarged to form a vertical end surface 14 
has
{ HEAD ~ The slide element } 8 also has at the rear end thereof { TAIL ~ an extension } 13 extending through the cut 6 into the recess 7 where the extension 13 is enlarged to form a vertical end surface 14
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH