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.
ween weeny wheen wen weenie wean when wenny wienie won win wan wany wane hwan whin wain wine winy wino waney whine whiny winey
been keen queen peen seen teen ween wheen sheen en