{TAIL ~ The gears} in {HEAD ~ the planetary gear trains} are sized to provide a desired speed reduction from the crank shaft to the cam shafts 
{ TAIL ~ The gears } in { HEAD ~ the planetary gear trains } are sized to provide a desired speed reduction from the crank shaft to the cam shafts
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH