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.
dript dropt dripped dropout trippet trapt draped tripod drooped dropped tripody tripped
dript gript rapt wrapt bewrapt erupt irrupt carpet corrupt crept crypt periapt rewrapt dropt trapt
drip drippy dorp drape drapey drop drupe trip tripe trippy