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.
sycee syce sice cees sees cease saice sauce seise seize seesaw says size sues sizy seas seis sews cess soys zees
sycee lycee cee fyce lycea cees syce
syce sycee fyce lycea lycee sice