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.
hulloes hullos helloes holloes hilloes halloes hulloos hulloas hulls hellos hillos hallos hollos haloes hallows holloas hollows hueless halloas halloos holloos hollies hilloas hulas hales hauls halls halos hills helos hells holes heelless holies helios hollas haoles hoyles hallahs hols hails heals heels heils hilus howls
felloes hilloes helloes hulloes holloes halloes callees gallous failles jellies galleys goalless lilos gillies mealless hillos halloos niellos collies filles halloas hulloos loess phyllos villous pillows valleys gullies mallows billows floes hullos aloes alloys heelless kellies rouilles soilless shallows challies willows wheelless wallows tulles toolless tallows tailless duellos dillies dallies sullies sillies follows sallows volleys sailless rallies fallows pollees mulleys ballies milles malleus alleys mailless bullies callous holloos holloas fillos bellows allows mallees gulleys hallos mollies hollos boulles follies belles bellies selles hellos hilloas gallows hollows villose allees hulloas folles coalless fellies fellows hallows cullies bullous hollies billies jellos gallies dalles lollies killies keelless haloes mellows cellos jollies soulless allies ghillies sloes fillies dollies callose rilles sallies tallies tellies nellies tuilles wallies pulleys wellies willies dellies woollies chillies tailles yellows les
hullo hulloa hulloo hull hallo halloa halloo hallow hello hillo hilloa hollo holloa holloo hollow ahull