wherein said outer teeth gears include {HEAD ~ a plurality} of {TAIL ~ outer teeth}, each of said outer teeth being crowned 
of
wherein said outer teeth gears include { HEAD ~ a plurality } of { TAIL ~ outer teeth } , each of said outer teeth being crowned
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH