I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
triol troll trill trail trial trolly trolley tearily tirl dariole trull droll trawl drail drily drill drool truly drolly drooly torula derail torulae trawley hydrilla terrella dirl
triol hoarily variola frail trial serail gorily role rill riel sorrily nerol verily merrily oriel roll furrily ferial payroll roil prill rial urial chorial wearily leerily tearily pyrola aerily pyrrole prowl parol charily droll rile zoril carriole derail grill drill krill carol virile narial parole eerily frill ariel neroli rail variole serial peril burial brill aril curial reroll trail fierily gharial brail airily cariole wirily growl drail grail dariole caroli zoarial broil drily oriole troll prole pyrrol aerial puerile drool trill warily cheerily shrill
trio taro tiro tori torii toro trow troy tyro atria rioter stria striae strow stroy