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.
hullooing hulloing hollooing hallooing hulloaing hulling halloing helloing hilloing holloing holloaing hilloaing halloaing haloing hauling hilling helling hollaing haling holing hailing healing heeling heiling howling
looing hallooing hullooing hollooing tooling siloing nielloing haloing hulloing folioing fooling halloaing halloing helloing hilloaing hilloing holloaing holloing hulloaing cooling pooling soloing shooling ling long