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.
mammey mamey mammy mammae mammee mammie mamie mummy mamma mommy mama mime maim mumm mome mamba mambo mimeo mem mim mom mum
mammey gimmie limey commie cammie commy jimmie jemmy jimmy pommie summae mummy rammy tammie mome tommy mammy whammy gimme chummy mammae shimmy gammy jammy emmy rummy gummy mamey hammy homey gamey gemmae gemmy immy pommy dummy femme pommee tammy mommy tummy mime chammy mammie shammy mammee yummy
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