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.
charro charr churro charry char chare chair churr chary chirr chiro cherry cheero chirre cheerio cheer chiru choir chore share shear shirr cheery chorea sharia sherry shariah
charro faro knarry morrow marry karoo quarry harry harrow gharry carr gharri furrow tarry taro aero parry churro pareo farrow arrow carry parr narrow gnarr morro karroo marrow barrio barrow barre borrow burro burrow charr tarre charry sorrow yarrow
chai chao chaw chay chia chiao