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.
sabir saber sabra sabre sober suber sobber subarea
sabir cobbier chubbier tubbier taber sabre gabbier rubier ribbier birr abri babier jabiru caber biro kabar bier labor labra knobbier knubbier nobbier nubbier ribier saber sabra daubier tabor webbier shabbier