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