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.
chair char chirr chiru choir chiro chary charr chare chirre charro charry shier shirr chore cheer churr shear shire share cheero cheery cherry chorea churro sharia cheerio shariah shri
hair chair air hire hear choir chirr heir chary hare dairy shire chare doughier pair naira mair lair hoar shear vair hairy whirr haar chiru chiro charr char whir zaire deair fairy nairu airy fair wair share shier shirr
chai chi chao chaw chay chia chiao chichi