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.
sulkies selkies silkies sulks slakes salukis silks slacks sleeks slicks sulcus silicas siliques silex slags slogs slugs sawlogs
alkies folkies selkies silkies sulkies talkies lakes likes luckies blokes flakes flukes kylikes salukis slakes
sulk selkie silkie sulky suslik