c-cd cccc cccp cccu ccdc ccdp ccdr ccoc ccod ccpp ccpr ccrc ccrp ccrt cctc cctt ccuc ccup ccut cd-r cddr cdot coco cocp coct cocu codd cood coop coot copd copo copp copr copt cor- corc cord coro corp corr cort cotc coto cott cotu coud coup cour cout cpcu cppd cprt cptp cptr crcc crcr crdc croc crod croo crop cror crot crpc crrt crtc crtp crud crup crut ctcp ctor ctot ctpo ctpp ctrc ctrp cucc cupo cupp cupr curd curo curr curt cut- cutc cuto cutt dccc dccp dcct dccu dcop dcpo dctc dcup dddd ddoc ddot ddpo ddrc doco doct docu dod- dodd dodo dood doop door doot dopo dopp dopr dopt dorc dord doro dorp dorr dort doru dotd doto dott douc doud doup dour dout dpcp dpdt dppc drod drop drot drou drup drut druu dtcc dtdp dtor dtot dttp duco duct dudd dudo dudu duo- dupo duro durt duru dutp duur duut occc occt ocpd ocpp ocro ocrr oct- octo ocur oddd odoo odop odor odot odou odrp odtu odur oocr oooo oord oort ootp opo- opor oppo opto orco ordo ordu oro- oror orot orpc orro ortc orto orup otcd oto- otoo otor otpp otro otto ottu otur oucc oudc our- ouro ourt out- outo ouu- pccc pcod pcpp pcrc pcrd pdcp pdoc pdpr pdrc pdtc pocd poco pod- podd podo podu pood poop poor poot pop- popc popo popp popt porc poro porr port potc potd poto pott potu poud poup pour pout ppcc ppcd ppod pppd pppo pppp pprc ppru pptt ppur prcc prcd prcp pro- proc prod proo prop prot prou prpd prrd prtc prtp prtr prud prut pruu ptcc ptdc ptop ptpd ptrd pttc pudo pudu pupu pur- puro purp purr puru put- puto putt putu puuc rccc rcdc rcpd rcpo rcpt rcrd rctc rdoc rdpc rocc roco rodd rodo rood roop roor root ropo rorc roro rort roru rotc roto rotr rott roud roup rout rpdp rptd rrrr rtcc rtdt rttp ruct rudd rudo rudp rupp rupt rurc rurd ruro rurp ruru ruto rutt rutu ruud tccc tccu tcdd tcpo tctc tdor toco todd todo todt todu tood toor toot top- topd topo topp topt topu torc tord toro torp torr tort toru totc totd toto totr tott toup tour tout tpcd tpcp tpdu tppd tppp tppr tptp tptr tput trcc troc trod troo trop trot trou trpc trpp trtc trtr truc trud trut truu ttcp ttop tttt tucc tuco tudu tuor tupo tupu turc turd turo turp turr turt turu tuto tutt tutu tuuo u-rp uccp ucdc ucdd ucrc ucut udoo udop udot udpd uocc uor- updo upor uppc uppp uppu upto upup urdu uro- uroo urpo urup urur urut utor utpd utto uttu uucp uuoc uuuu