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.
ileac iliac ilka ilk
ileac lac shellac slack pollack oleic lack laic leak alack alec black bleak flack fleck heliac iliac clack coeliac lilac plack celiac telega shellack