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.
reoil roil roily rill rail rile riel roll real rely rial rouille reel relay riley rille realia really rale role rule ruly
reoil oil sheila toil doily soil ceil boil foil veil voila voile heil moil coil noil noily oily poilu roil roily ceili deil teloi toile sheol