{HEAD ~ a second synchronizing device} for selectively engaging the other low speed gear and {TAIL ~ the other high speed gear} with said output shaft 
for selectively engaging
{ HEAD ~ a second synchronizing device } for selectively engaging the other low speed gear and { TAIL ~ the other high speed gear } with said output shaft
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH