The other of {HEAD ~ the pair} of apertures to cooperate with {TAIL ~ the output end} of the rotary shaft to form a second connection 
to cooperate with
The other of { HEAD ~ the pair } of apertures to cooperate with { TAIL ~ the output end } of the rotary shaft to form a second connection
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH