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.
subbase subbass subas subahs subsea subs soubise sibbs sobas sabs sibs sobs sabes ceibas syboes
subbase base abase abbas babas bubbas gibbose jubbahs rubasse subbass debase diabase bas