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.
holyday holiday hold holed howled hollaed holloed holt held hollooed holloaed halid haled hulled hilled heeled halide helled heiled haloed hailed healed hauled haloid howlet halloed helloed hilloed hulloed
holyday holiday playday welladay