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.
lama llama lamia lam lamiae lame luma lima loam lamb louma loamy lemma lamby lambie lum limy limb limo loom lime ylem limba limbi limbo limby limey
ama gama lama llama mama ma am