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.
shereef sherif sheriff sharif shroff shrieve shrive shrove
shereef reef reefy hereof whereof ref
share shear sheer sherry shier shire shoer shore shrew usher