An array of {TAIL ~ these hovering wind turbines} can be used to generate {HEAD ~ large amounts} of energy 
An array of { TAIL ~ these hovering wind turbines } can be used to generate { HEAD ~ large amounts } of energy
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH