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.
wooden widen whiten wheaten
coden loden wooden den hodden dean duodena deaden sodden ridden redden hoyden madden dene deni deny bidden vodun shodden fadein midden codon sudden iodin odeon codein redeny laden sadden leaden hoiden maiden dudeen widen louden hidden chidden hyoidean