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.
heishi hash hush heuch hoochie
heishi rishi wisha whish dishy beauish fish fishy geisha cuish lichi knish mashie pish poisha roshi sushi dashi dish tushie wish chichi