The set of drive gears is mounted on a drive shaft and comprises the gears having different diameters which {HEAD ~ all} rotate together with {TAIL ~ the drive shaft} 
rotate together with
The set of drive gears is mounted on a drive shaft and comprises the gears having different diameters which { HEAD ~ all } rotate together with { TAIL ~ the drive shaft }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL