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