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.
hilloas hillos halloas hulloas hilloes holloas hills hellos hullos hollas hollos hallos holloos halloes hulloes hallows helloes halloos hulloos holloes hallahs hollows hulas halls hells hilus hails helos hulls halos heils haloes helios hollies hols heelless holes hales heals howls hauls heels haoles holies hoyles hueless
halloas hulloas holloas hilloas willows zillahs tallows pillows sallows niellos ollas mellows mullahs gallows lilos callose cullays hulloos jellos hallows shallows wallas phyllos hilloes helloes follows fellahs halloos villous challas hellos felloes holloes hollos villas halloes hollas hillos fallows fellows hollows hulloes holloos fellas bullous wallows hallahs bellows hallos fillos alloys billows hullos callas mollahs allays allows chollas wallahs duellos scillas cellos nullahs villose paellas mullas mallows quillais gallous callous challahs yellows las
hillo hilloa hill hallo halloa halloo hallow hello hilly hollo holloa holloo hollow hullo hulloa hulloo