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.
cirri cire ceria sirra sierra sirrah sirree sir sri cere cero sari sire sori zori
cirri liri shirr chirr whirry whirr durrie sirra moirai miri kerria barrio currie corrie gharri firry feirie birr wirra chirre yirr