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.
mammee mammey mammie mammae mamey mamie mamma mammy mumm mime maim meme mama mome mamba mambo mimeo mommy mummy mem mim mom mum
pommee mammee summae pommie mome mime meme mammie mammey mammae commie cammie jimmie gimmie gimme gemmae femme ramee tammie
mamma mammy mammey mammie mammee mammae hammy tammie jammy mummy cammie mommy mambo gammy ammo mamba gamma maim momma mama mumm mamey rammy mamie tammy