-hou hhhh hoho hoor hoot horo horr hort horw hoth hoto hotr hott hotu hotw hour hout houw howh howr howt htoh httr huhu huor huot huro hurr hurt huru huth huto hutt hutu ohho ohoh ohow ohto ohtu ooho oooh oooo oort ootw oro- oror orot orro orth orto orwo otho othr oto- otoh otoo otor otow otro otto ottu otur otwo our- ouro ourt out- outh outo ouu- owoh owow owt- owth owtt owur rhoh rohr rohu roor root roro rort roru roth roto rotr rott rouh rout rowh rowr rowt roww rrrr ruhh ruhr ruro ruru ruth ruto rutt rutu thoo thor thot thou thow thro thru thrw thtr thur toho tohu tooh toor toot toro torr tort toru toth toto totr tott touh tour tout towh troo trot trou trow trtr trut truu tttt tuht tuhu tuor turo turr turt turu tuto tutt tutu tuuo two- twoh twoo twot uhoh uhuh uor- urho uro- uroo urrh urth urur urut utor utto uttu utwo uuuu whhh whho whhr whht whhw whoo whor whot whou whow whr- whrh whro whru whrw whth whto whtt whtu whur whut whwh woht woot woow woro worr wort worw woth wotr wott wotw wour wout wouw wowo wowt woww wrho wrht wrhu wroo wrot wrow wrrh wrro wrrw wrth wrto wrtr wrtu wrtw wrwh wrwr wthr wtht wthu wtoh wtor wtot wtou wtow wtrh wtro wtrt wtru wtrw wtth wtto wttr wttt wttu wttw wtwo wtwr wtwt wtww wuht wuhu wuot wur- wurt wutr wutu wuuu wwho wwhr wwht wwor wwot wwow wwrr wwru wwrw wwth wwtr wwtw wwuh wwwh wwwr wwww