dddd dod- dodd dodo dond donn dono donr dood doon door dord dorn doro dorr doru doud doun dour douw dowd down dowr drno drod dron drou drow druu dudd dudo dudu dunn duno duo- duon durn duro duru duur dwdd dwdu dwnu dwon dwor dwrd dwrw dwun dwww nddo ndor nnnn nodo nodu non- nonn nono nonu nonw noo- noon nooo noor nor- nord norn noro norr norw noun nour nowd nown nron nrrd nudd nudo nunn nuno nuon nurd nurn nurr nuru oddd odon odoo odor odou odur ondo onno onod onon onor onur oooo oord ordn ordo ordu orno oro- oron oror orro orwo oun- ound our- ourn ouro ouu- ownd owow owur rnod rodd rodo rodw rond rono ronw rood roon roor roro roru roud roun rowd rown rowr roww rrrr rrun rudd rudo rund runn runo rurd ruro ruru ruud ruun udon udoo udun undo unno unon unro uor- urdu uro- uroo urun urur uuno uuuu wddd wddo wddw wdnd wdno wdnr wdod wdor wdow wdrr wdru wdun wdur wdwd wdwn wdwr wndd wndn wndr wndu wnnd wnnr wnnw wnoo wnor wnow wnrn wnrr wnrw wnuw wnwn wnwr wnww wodd wond wonn wonu wonw wood woon woow word worn woro worr worw woud wour wouw wown wowo woww wrdd wrdn wrdo wrdr wrdu wrdw wrnd wrnn wrno wrnr wrnw wrod wron wroo wrow wrrd wrrn wrro wrrw wrwd wrwn wrwr wudd wudr wudu wund wuno wunr wunw wur- wurd wurn wuuu wwdn wwdr wwdw wwnn wwno wwnr wwnw wwod wwon wwor wwow wwrd wwrr wwru wwrw wwwn wwwr wwww