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.
dreich diarchy torch torchy troche trachea trishaw trochee tracheae
dreich reach reecho reechy retch rich wretch birch breach breech carritch creche merch parritch perch preach
dare deair dere dire dore dree drew dure retire retiree