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.
flail fallal filial fellowly filially
flail hallal chillily wilily daylily sillily pallial oilily lowlily glial jollily ilial ileal holily halala lall halal filial fallal lily lilo leal molal paleal salal slily telial woollily shillala
fail faille fila flaw flawy flay flea folia folio