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.
symboled symbolled smiled smelled smolt samlet simulate smalt smelt smalti smalto
gamboled symboled wimbled umbeled moiled ambled bumbled fumbled humbled gimbaled jumbled gambled gambolled mumbled rambled rumbled symbolled tumbled wambled shambled