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.
wheen ween when weeny wen weenie wean whin wenny whiny whine whiney wienie whinny wan win won hwan wain wane wany wine wino winy
wheen sheen hen keen sheeny been hyphen veena haen hewn peen seen teen teeny ween weeny when queen shewn
whee wee whew whey awee twee weewee