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