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.
leucins leucines laciness lousiness lysins lessons license loosens lessens lucency lysines lucence laziness liaisons licensee looseness licence
leucins mucins cines cions scions acinus fascines ficins cousins leucines niacins oscines piscinas ricins ricinus hyoscines