{HEAD ~ The coupling system} may also include gearing or {TAIL ~ other drive componentry} to increase or decrease the speed of the turbine relative to the speed of fluid flow 
include
{ HEAD ~ The coupling system } may also include gearing or { TAIL ~ other drive componentry } to increase or decrease the speed of the turbine relative to the speed of fluid flow
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH