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.
ceibas sibs sibbs sobas subas zebus subahs subbase subbass
ceibas bas cobias jubas jibes ibis phobias gibs abase bubbas fibs bibbs bibs ribes obas abbas abas sibs subahs subbase debase dibs tubas babas jibbs libs baas nibs obias ribs boas bias bays base bass nubias vibes gibes jibs jubbahs kibes mibs sibbs sobas subas subbass diabase tibias shibahs