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.
nolo noil noel knoll noily knolly niello nil nail nala nill null kneel knell nelly newly
bolo kolo nolo polo solo cholo lo