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.
sherry cherry shier shoer shear sheer shirr cheery charry shri churr chirr cheer shore shire chary share shrew charr charro cheero chirre churro sharia cheerio shariah
ferry perry jerry kerry berry herry sherry terry serry derry wherry cherry merry err faery carry eery hurray deray deary sierra firry lorry quarry murry harry peery leery leary aery charry tarry whirry murrey query knarry hurry weary array marry gharry furry parry fiery terra gurry very veery sorry eyry teary curry worry burry cheery beery surrey
she shea sheugh shew shoe sheesh sheuch