-hou dddd ddre dedd dede dedo dedu deed deef deer defe deff defo dehu deor der- dere derf dero derr deue deur dfer dfoe dfrf dhed dhee dher dhod dhor dhur dod- dodd dode dodo doer doff dohr dood doof door dord dore dorf doro dorr doru doud doue douf dour dred dree dref dreh drod drof droh drou drue druu dudd dude dudo dudu duer duff dufu duhe duhr duhu duo- dure duro duru duur edde eddo ede- edeh eder edfu edod edou edru edur eede eedu eeee eefe eero efeo efor ehdd eheh eher eheu ehre ehud eode eore erde erdf ered erer erhu erod eroe eroo erre erro eruh erur eude euer eur- eure euro fede feed feer fefe feff fefo fehd fehr fehu feod feof feoh ferd fere fero ferr feru feud ffee ffff ffrr fode foed foer fofo fohr food foof for- ford fore foro forr foud four fred free freo froe froh frou frue fudd fude fuff fufu fuor fur- fure furo furr hdod hedd hede hedo heed heef heer hefd hefe hehe heho heor heou herd here hero herr heru heue heur hhhh hhof hode hodh hodr hoed hoer hofe hoff hofu hohe hoho hood hooe hoof hoor hord hore horo horr houd houe houf hour hree hrod hrud hudd hude hudo hudu hued huer hufe huff hufu huhu huor hurd hure huro hurr huru o-eo oddd oded odeo oder odoh odoo odor odou odur oedo oere oeuf ofdr ofer off- offe offh offo offr offu ofor ofre ohed ohee oher ohho ohoh ohre ooer ooff ooho oooh oooo oord oore orde ordo ordu ore- ored oreh oreo orer orfe orff orfu orhe oro- oroe orof oror orro oude oudh oued ouer oufe ouff our- oure ouro ouu- rder redd rede redh redo redr redu reed reef refd refe reff refr refu rehe reod reof reou rerd rere rero reru reue reuf reuu rfef rhee rheo rhod rhoh rhue rodd rode rodo roed roer rofe roff rofo rohe rohr rohu rood roof roor rore roro roru roud roue rouf rouh rred rrrr rudd rude rudo rued ruer rufe ruff rufo ruhe ruhh ruhr rurd rure ruro ruru ruud uder udoh udoo ufer uffe uh-d uhde uher uhoh uhuh uofo uor- uore urde urdu ure- ured ureh urfe urff urho uro- uroo urre urrh urur uuuu