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.
rouille rille role roll rule roil rill rile rouleau roily reoil riley rail rale rial riel ruly rally really
mouille rouille tuille tulle bullae faille taille pulley gulley rille mulley quill mille killie billie boulle guile villae ghillie fille gillie willie ill