{TAIL ~ The set} of driven gears also comprises {HEAD ~ the gears} having different diameters which rotate independently on an output shaft 
{ TAIL ~ The set } of driven gears also comprises { HEAD ~ the gears } having different diameters which rotate independently on an output shaft
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH