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.
tirls dirls tireless triols trials trulls trails trolls trills trawls troilus torulas tearless trolleys trawleys treeless terrellas trailless drools drails drolls drawls drills derails trellis darioles doorless trollies hydrillas hydrolase
birls virls dirls whirls girls tirls carls herls parols birles grills rails drills arils jurels farles orals ariels jarls perils murals corrals rills orles brails ferals riles broils prills serails shorls chorals quarrels purls trills trails farls parrels sorels ceorls parrals gnarls troilus morels marls zorils frails merls grails goorals reoils aerials laurels burials aryls ferrels serials nerols brills arles saurels rials sorrels earls carles barrels merles knurls drails gharials riels curls nurls hurls gorals grilse roils morals burls beryls krills carols furls oriels frills borals byrls parles corals pearls pyrrols derails harls carrels trials triols urials whorls churls shrills
tirl dirl trill troll trolley trolly trull truly