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.
shed shoed shied shooed shod shad shade shute shady shote sheet shadow shoddy shadowy shut shit chad shat shot chid cheat chide chute shoat shoot shott shout
she shea sheugh shew sheesh sheuch sh