c-cd cccc cccu ccdc ccdn ccdr ccnc ccnr ccnu ccoc ccod ccrc ccrt cctc cctt ccuc ccut cd-r cddr cdnc cdon cdot cnco cndd cnrc cnrr cnrt cntc cntr cnut coco coct cocu codd con- conc cond conn cono cont cood coon coot cor- corc cord corn coro corr cort cotc cotn coto cott cotu coud coun cour cout crcc crcr crdc croc crod cron croo cror crot crrt crtc crud crun crut ctor ctot ctrc ctrn cttn cucc cucn cund cuno cunt cuon curd curn curo curr curt cut- cutc cuto cutt dccc dcct dccu dcon dctc dddd ddoc ddot ddrc dnoc dnrc dntt dnut doco doct docu dod- dodd dodo donc dond donn dono donr dont dood doon door doot dorc dord dorn doro dorr dort doru dotd doto dott douc doud doun dour dout drno drod dron drot drou drut druu dtcc dtor dtot duco duct dudd dudo dudu dunc dunn duno dunt duo- duon durn duro durt duru duur duut nccc nccn nccr ncct nccu ncdc ncdn ncdr ncdu ncnc ncnd ncoc ncor ncrc nctc nctr ndcc nddo ndnt ndoc ndor ndrc ndtc ndut nnnn nnot nntn noco noct nodo nodu non- nonn nono nont nonu noo- noon nooo noor noot nor- norc nord norn noro norr nort not- noto nott noun nour nout nrdc nroc nron nrrc nrrd ntcc ntnd ntnu ntrc ntru ntto nttr ntuc nucu nudc nudd nudo nunc nunn nuno nunt nuoc nuon nurc nurd nurn nurr nurt nuru nutt nutu occc occn occt ocon ocro ocrr oct- octo ocur oddd odon odoo odor odot odou odtu odur onc- oncd onco onct ondo onno onod onon onor ont- ontc onto onur onut oocr oont oooo oord oort orco ordn ordo ordu ornc orno oro- oron oror orot orro ortc orto otcd oto- oton otoo otor otro otto ottu otur oucc oudc oun- ound our- ourn ouro ourt out- outo ouu- rccc rcdc rcnr rcon rcrd rctc rdoc rnco rndc rnnt rnod rnot rntd rnut rocc roco rodd rodo ronc rond rono ront rood roon roor root rorc roro rort roru rotc rotn roto rotr rott roud roun rout rrrr rrun rtcc rtdt rtnd ruct rudd rudo runc rund runn runo runt rurc rurd ruro ruru ruto rutt rutu ruud ruun tccc tccu tcdd tcnn tcon tctc tdor tncc tndd tnut toco todd todo todt todu tonn tono tonu tood toon toor toot torc tord torn toro torr tort toru totc totd toto totr tott toun tour tout trcc trno troc trod tron troo trot trou trtc trtr truc trud trun trut truu ttcn tton tttt tucc tuco tudu tunc tund tunn tuno tunu tuor turc turd turn turo turr turt turu tuto tutt tutu tuuo ucdc ucdd ucon ucrc ucut udon udoo udot udun uncc unco unct undo unno unon unro unto unut uocc uor- urdu uro- uroo urun urur urut utor utto uttu uuno uuoc uuuu