The number of sprags 80 is equal to {HEAD ~ the number} of {TAIL ~ sprags} 40, while the clutch teeth 78 are equal in number to the clutch teeth 20 
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The number of sprags 80 is equal to { HEAD ~ the number } of { TAIL ~ sprags } 40 , while the clutch teeth 78 are equal in number to the clutch teeth 20
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH