{TAIL ~ The slider} is slidably mounted in {HEAD ~ the longitudinal slot} and protrudes through the oblique slot into the transverse slot 
{ TAIL ~ The slider } is slidably mounted in { HEAD ~ the longitudinal slot } and protrudes through the oblique slot into the transverse slot
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH