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.
ptooey pooed pity paty poet pate pood patty peaty putto potty piety petty petto putty potto pouty pattie hypoed pattee puttee puttie pat ped pet pit pod pot put
ptooey looed wooed doody sooty rooty pooed motey mooed moody goody boody cooed hooty hoody footy booty booed zooty woody shooed