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.
fecal faecal focal faucal feckly fecula feculae focally fugal vocal facula fickly fugally vocally
faecal cecal decal caecal fecal ducal recall zocalo egal scaly caul scale focal cicala jackal coal calo vocal call regal locale squeal legal local laical cicale scall faucal jacal pical recoal tical