The forward ends of {HEAD ~ a pair} of {TAIL ~ lower draft links} are secured to the outer ends of the shaft  
of
The forward ends of { HEAD ~ a pair } of { TAIL ~ lower draft links } are secured to the outer ends of the shaft
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH