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.
duals dals dahls duels dulse dials dales dulls deals dalasi dalles doulas dulias dualize dallies dialyse dels dols duellos dahlias dailies delis talls tales tules talas teals tails deils deles talus dells dolls doles dills diols taels tulles delays tallis tuilles tallies tallows doolies doylies dewless tailles dollies doolees delouse doyleys dellies dialyze dillies doilies tailless tels tils
duals jouals als ails false hulas coulis bialis calos galas phials buhls fouls caulis joules gules fails pawls lulls salsa galls gaols pales coalas guls alls meals jails alas malls ales aals also vales mules halls pulse mails pals shauls wheals weals dals wauls ulus wales dulls sulus seals talls talas sales shuls yawls sheals taels dahls kales nulls quails pulls fulls rales teals rules pules bawls nails dials reals bialys boules hauls veals vials valse wails tails calls talus luaus vails hails bulls duels bails hales gals fuels heals shoals halos wawls reales foals balas sails culls kails gulls falls bales lalls caules mulls hulls ghouls baals balls pulis nalas shales balsa goals rials cauls rails lulus bals miauls mauls awls koalas males palls coals sals doulas sials gales shawls peals walls tules tales dulse palsy sauls whales deals pails dales zeals puls souls yules
dual dually dal dully dahl dahlia daily dale dally deal dial duel duelli duello dulia dull doula duly