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.
torulas trulls tirls terrellas trawls trolls trails trials triols trills troilus trellis trolleys tireless treeless tearless doorless trollies trawleys trailless hydrillas hydrolase dirls drails drawls drills drolls drools derails
ferulas morulas neurulas torulas rules ferrules ferules gruels parlays pyrolas trulls