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.
fleeched fletched filched fleshed flitched flechette flashed flushed flysheet
leched leeched fleeched fletched slouched fleshed mulched clutched cliched flitched blotched filched bleached belched letched leached latched pleached welched