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.
putti puttie putt putty petti putto put pattie puttee ptui pout petty petto potty pitta pouty potto patty pattee pat pot pet pit pud pita pity poet padi pate paty paid pied peat
putti tutti cutty putty puttie butte butty hottie jutty cattie cutie butt sutta gutta mutt nutty pattie petti putt putto rutty dautie tittie gutty tattie tutty