-hou dddd ddot ddre dedd dede dedo dedu deed deer deet dehu deor der- dere dero derr dete deth deto detr deue deur deut dhed dhee dher dhod dhor dhur dod- dodd dode dodo doer dohr dood door doot dord dore doro dorr dort doru dotd dote doth doto dott doud doue dour dout dred dree dreh dret drod droh drot drou drue drut druu dted dthd dtor dtot dudd dude dudo dudu duer duet duhe duhr duhu duo- dure duro durt duru dute duur duut edde eddo ede- edeh eder edod edou edru edur eede eedu eeee eero eete eeth eetu ehdd eheh eher eheu ehre ehte ehud eode eore eotd eoto erde ered erer eret erhu erod eroe eroo erre erro erth ertu eruh erur etee eter eth- ethe etho etoe etoh etre etro ette etto ettu eude euer eur- eure euro eurt euth hdod hdtt hedd hede hedo heed heer heet hehe heho heor heou herd here hero herr hert heru hete heth heto hett hetu heue heur hhhh hode hodh hodr hoed hoer hohe hoho hood hooe hoor hoot hord hore horo horr hort hotd hote hoth hoto hotr hott hotu houd houe hour hout hree hrod hrte hrud htet htoh httr hudd hude hudo hudu hued huer huet huhu huor huot hurd hure huro hurr hurt huru hute huth huto hutt hutu o-eo oddd oded odeo oder odet odoh odoo odor odot odou odtu odur oedo oere ohed ohee oher ohho ohoh ohre ohte ohto ohtu ooer ooho oooh oooo oord oore oort orde ordo ordu ore- ored oreh oreo orer orhe oro- oroe oror orot orro orte orth orto oted otee oter othe otho othr oto- otoe otoh otoo otor otre otro otte otto ottu otur oude oudh oued ouer our- oure ouro ourt out- oute outh outo ouu- rder redd rede redh redo redr redu reed reet rehe reht reod reot reou rerd rere rero rert reru retd rete reth reto retr rett reue reut reuu rhee rheo rhet rhod rhoh rhue rodd rode rodo roed roer roet rohe rohr rohu rood roor root rore roro rort roru rote roth roto rotr rott roud roue rouh rout rred rrrr rtdt rtee rudd rude rudo rued ruer ruet ruhe ruhh ruhr rurd rure ruro ruru rute ruth ruto rutt rutu ruud tdor tedd tede teed teer teet teho tehr teoh teor ter- tere tero terr teru tete teth teto tetr tett tetu teut thdr the- thed thee theo ther thet theu thoe thoo thor thot thou thre thro thru thtr thud thue thur todd tode todo todt todu toed toee toeh toer toet toho tohu tood tooh toor toot tord tore toro torr tort toru totd tote toth toto totr tott touh tour tout tre- tred tree treo tret treu trod troe troo trot trou trte trtr trud true trut truu tteo tter ttoe tttt tude tudu tuer tuet tuht tuhu tuor turd ture turo turr turt turu tute tuto tutt tutu tuuo uder udet udoh udoo udot uh-d uhde uher uhoh uhuh uor- uore urde urdu ure- ured ureh uret urho uro- uroo urre urrh urte urth urur urut uter uthe utor utto uttu uuuu