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.
trailless trills trails tearless treeless trollies trawleys trolleys tireless triols trawls trolls drails drills trials trulls trellis troilus derails doorless darioles tirls hydrillas terrellas drawls drolls torulas dirls
trailless rilles rouilles airless brailles hairless heirless grilles zorilles weariless