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.
loin lin lien lain lone linn lown lion loan liny line lino loon liana leone liane liney loony loonie looney lean leno lane lawn luna lune luny lanai lauan lawny llano
foin join coin quoin loin in on