{HEAD ~ The hydrogen} is then fed directly through conduit 16 into {TAIL ~ the fuel intake system} of the engine where it is ignited to produce energy in driving the internal components of the engine 
is fed directly into
{ HEAD ~ The hydrogen } is then fed directly through conduit 16 into { TAIL ~ the fuel intake system } of the engine where it is ignited to produce energy in driving the internal components of the engine
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH