dddd ddot dfdt dfrf dftg dftr dntt dnut dod- dodd dodg dodo doff dog- dogg dogo dogu dond dong donn dono donr dont dood doof doon door doot dord dorf dorn doro dorr dort doru dotd doto dott doud douf doug doun dour dout drno drod drof drog dron drot drou drug drut druu dtng dtor dtot dudd dudo dudu duff dufu dugu dung dunn duno dunt duo- duon durg durn duro durt duru duur duut fdot ffff ffrr fftf ffun fndd fndg fndn fndr fnuf fofo fogg fogn fogo fond fong fono font food foof foon foot for- ford forg forn foro forr fort foto fott foud foug foun four fout frog fron frot frou frug frun ftgd fudd fuff fufu fugo fugu fund funf fung funt fuor fur- furg furn furo furr furt futo futu gdfr gdnf gdor gdrt gfor ggfg gggg ggrn gnod gnof gnoo gnrr godo goff gofr gofu gogo gon- gond gong gonn gono gonu good goof goog goon goor goot gord gorf gorg gorn goro gorr gort gotd goto gott gou- goud gouf goug goun gour gout grod grof grog gron groo gror grot grou grrr gruf grug grun grur grut gtfo gudo gudu guff gugg gugu gund gung gunn gunt gurd gurg gurn guro gurr gurt guru guto gutt gutu nddo ndnt ndor ndrf ndut nfff nfon nfto ngon ngor ngou ngtn ngur nguu nngn nnnn nnot nntn nodo nodu nogg nogo nogt non- nong nonn nono nont nonu noo- noon nooo noor noot nor- nord norf norg norn noro norr nort not- noto nott noun nour nout nron nrrd ntnd ntnu ntof ntru ntto nttr nudd nudo nuff nung nunn nuno nunt nuon nurd nurn nurr nurt nuru nutt nutu oddd odon odoo odor odot odou odtu odur ofdr off- offo offr offu ofgo ofno ofor ogfr ogod ogog ogon ogou ogro ogun ondo ongo ongu onno onod onon onor ont- onto onur onut ooff oont oooo oord oort ordn ordo ordu orff orfu orgn orgo orno oro- orof oron oror orot orro orto oto- otof otog oton otoo otor otro otto ottu otur ouff oun- ound oung our- ourn ouro ourt out- outo ouu- rgtr rndf rnnt rnod rnot rntd rnut rodd rodo roff rofo rogg rogo rond rong rono ront rood roof roog roon roor root roro rort roru rotg rotn roto rotr rott roud rouf roun rout rrrr rrun rtdt rtnd rudd rudo ruff rufo ruft rugg rund runf rung runn runo runt rurd ruro ruru ruto rutt rutu ruud ruun tdff tdor tfot tndd tndf tnut todd todo todt todu toff tofo toft tofu togo togr togt tong tonn tono tonu tood toof toon toor toot tord torf torg torn toro torr tort toru totd toto totr tott toug toun tour tout trfd trfr trng trno trod trog tron troo trot trou trtr trud trug trun trut truu ttff ttfn tton tttt tudu tuff tufo tuft tufu tugg tugu tund tung tunn tuno tunu tuor turd turf turg turn turo turr turt turu tuto tutt tutu tuuo udon udoo udot udun uggo uggt ugod ugro ugur uguu undo unfd ungo ungu unno unon unrf unro unto unut uofg uofo uor- urdu urff urft urgu uro- uroo urun urur urut utfo utor utto uttu utug uuno uutf uuuu