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.
sharn shairn sharny shorn shoran shrine churn chirren chorine chorion
sharn bairn yarn sharny shairn warn darn saran barn barny baron earn varna airn horn cairn carn carny garni karn learn reearn sarin tarn churn hern shorn yearn
share sharia shariah char chare charr charro charry chary shear sherry shire shirr shore shrew shri