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.
wain win wan whin wine hwan winy wean wany wane wino whiny waney whine winey whiney wienie whinny winnow wen won ween when weeny wenny wheen
ain fain vain cain gain kain lain main pain rain sain tain wain chain an in