One such fuel processor is {HEAD ~ a steam reformer} which produces {TAIL ~ purified hydrogen} from a carbon containing feedstock and water 
produces
One such fuel processor is { HEAD ~ a steam reformer } which produces { TAIL ~ purified hydrogen } from a carbon containing feedstock and water
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH