Said {HEAD ~ speed changing operation} of said {TAIL ~ either one transmission mechanism} started in the step establishes a third shift position in the automatic transmission 
of
Said { HEAD ~ speed changing operation } of said { TAIL ~ either one transmission mechanism } started in the step establishes a third shift position in the automatic transmission
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH