dddd ddot dntt dnut dod- dodd dodo dold doll dolo dolt dolu dond donn dono donr dont dood dool doon door doot dord dorn doro dorr dort doru dotd doto dott doud doul doun dour dout drno drod drol dron drot drou drut druu dtor dtot dtrl dudd dudo dudu dull dulo dult dulu dunn duno dunt duo- duon durn duro durt duru duul duur duut llll llod lloo llud lndn lold loll lolo lond lono lonr lont lood lool loon loor loot lord lorn loro lotd lotl loto lotr lott loud loul loun lour lout louu lrdd lron lrrr ltnt lttr ludd ludo lull lulu lund lunn luno lunt lurd lurt nddo ndnt ndor ndut nnnn nnot nntn nodo nodu nold noll nolo nolt non- nonn nono nont nonu noo- nool noon nooo noor noot nor- nord norn noro norr nort not- noto nott noul noun nour nout nron nrrd nrrl nrtl ntnd ntnu ntrl ntru ntto nttr nudd nudo null nunn nuno nunt nuon nurd nurl nurn nurr nurt nuru nutt nutu oddd odon odoo odor odot odou odrl odtu odur oldn ollo olon olor olot oltu olur ondo onno onod onon onor ont- onto onur onut oold oolo oont oooo oord oort ordn ordo ordu orlo orlu orno oro- oron oror orot orro orto oto- oton otoo otor otro otto ottu otur ould oulu oun- ound our- ourn ouro ourt out- outo ouu- rldt rnld rnnt rnod rnot rntd rnut rodd rodo rold roll rolo rolt rond rono ront rood rool roon roor root roro rort roru rotl rotn roto rotr rott roud roul roun rout rrrr rrun rtdt rtlt rtnd rudd rudl rudo rull rulo rund runn runo runt rurd ruro ruru rutl ruto rutt rutu ruud ruun tdor tldr tlon tndd tnut todd todo todt todu tol- told toll tolo tolt tolu tonn tono tonu tood tool toon toor toot tord torn toro torr tort toru totd toto totr tott toul toun tour tout trno trod tron troo trot trou trtr trud trun trut truu tton tttt ttul tudu tull tulo tulu tund tunn tuno tunu tuor turd turn turo turr turt turu tutl tuto tutt tutu tuuo udon udoo udot udun ullo ullr ulno ulo- ulto ultt ulul undo unno unon unro unto unut uor- urdu uro- urol uroo urun urur urut utor utto uttu uulu uuno uuuu