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.
pial pal pily pili pile pale paly pail pall pawl pill peal pilei pally pilaw pilea pilau poilu palea pallia pillow paleae paella pul ply pol pillowy poll puli plow pula pool play polo plie peel ploy poly plew pele plea pule pole pull polio
phial vial pial rial dial sial al