{HEAD ~ The maximum amount} of flexure of the internal gear 3 is determined by {TAIL ~ the size} of the gap 23 in the radial direction 
is determined by
{ HEAD ~ The maximum amount } of flexure of the internal gear 3 is determined by { TAIL ~ the size } of the gap 23 in the radial direction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH