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.
chetah cheetah chaeta chaetae cheat shittah chuddah chateau chad chit chat chide chott chute sheet chatty chitty
chetah cheetah eta reata chaetae chaeta zeta setae seta meta pieta lotah geta feta betta beta shittah