bbbb bbpr bbrc bcbc bcbp bccc bcnu bcor bcpp bcru bctc bcuc bcup bnoc bnor bnpp bnrr bobb bobo bobu boco bocu bonc bonn bono bont bonu boob booc boon boop boor boot bopp bor- born boro borr bort boru botb botn boto bott boun boup bour bout bpcp bpot bprc brcb brno brob broc bron broo bror brot brou brrr brtc bruc brun brup brut btbp btcc btob btor btrc btrt bttb bubb bubo bubu bucc buco bucu bunb bunn buno bunt bunu buon bupc bur- burb burn buro burp burr burt buru but- buto butt c-bo cbbc cbcc cbcn cbcp cbcr cbct cbcu cbot cbpc cbpp cbrn cbrt cbtc ccbc ccbn cccb cccc cccp cccu ccnb ccnc ccnp ccnr ccnu ccob ccoc ccpn ccpp ccpr ccrc ccrp ccrt cctb cctc cctt ccuc ccup ccut cnbc cnbp cnco cncp cnrc cnrr cnrt cntc cntr cnut cobb cobo cobu coco cocp coct cocu con- conc conn cono cont coob coon coop coot copo copp copr copt cor- corb corc corn coro corp corr cort cotb cotc cotn coto cott cotu coub coun coup cour cout cpbc cpcu cpnb cpnt cprt cptp cptr crbc crbu crcc crcr crob croc cron croo crop cror crot crpc crrt crtc crtp crub crun crup crut ctcp ctor ctot ctpo ctpp ctrc ctrn ctrp cttn cub- cubb cucc cucn cuno cunp cunt cuon cupo cupp cupr curb curn curo curr curt cut- cutc cuto cutt n-up nbbc nbbo nbcc nbco nbpp ncbc nccc nccn nccp nccr ncct nccu ncnc ncoc ncor ncpc ncrc ncrp nctc nctr nnnn nnot nnpr nntn nobc nobo nobu noco noct non- nonn nono nont nonu noo- noob noon nooo noop noor noot nor- norb norc norn noro norr nort not- noto nott noun noup nour nout npcc nppc nprt nptc nptn nroc nron nrpc nrpn nrrc ntbc ntcc ntnu ntop ntpc ntrc ntru ntto nttr ntuc nubc nucu nunc nunn nuno nunt nuoc nuon nurc nurn nurp nurr nurt nuru nutt nutu obbo obon obor obot obro ocbc occc occn occt ocon ocpp ocro ocrr oct- octo ocur onc- onco onct onno onon onor onpt onpu ont- ontc onto onup onur onut oocr oont oooo oort ootb ootp opo- opon opor oppo optn opto orbb orbo orbu orco ornc orno oro- oron oror orot orpc orro ortc orto orub orup oto- oton otoo otor otpp otro otto ottu otur oucc oun- our- ourn ouro ourt out- outb outo ouu- pbcc pboc pcbc pccc pcnt pcpb pcpn pcpp pcrc pcun pnon pnot pnpo pnpp pnro pntr pnup pobo poco ponc pono ponp pont poon poop poor poot pop- popc popo popp popt porb porc porn poro porr port potc poto pott potu poun poup pour pout ppcc pppn pppo pppp pprc ppru pptn pptt ppur prbc prcc prcp prnp pro- prob proc pron proo prop prot prou prtc prtp prtr prut pruu ptcc ptop pttc pubu punc puno punt punu pupu pur- purb puro purp purr puru put- puto putt putu puuc rbbb rbbr rcbc rcbo rccb rccc rcnr rcon rcpo rcpt rctc rnbr rnco rncp rnnt rnot rntp rnut rob- robb robo robt robu rocc roco ronc rono ront roob roon roop roor root ropo rorc roro rort roru rotc rotn roto rotr rott roub roun roup rout rpob rpon rppn rptn rrrr rrun rtcc rttp rubb rubp rubu ruct runc runn runo runt rupp rupt rurc ruro rurp ruru ruto rutt rutu ruun tbcb tbcc tbrb tbtp tccc tccu tcnn tcon tcpo tctc tnbc tncc tnut tobo tobt tobu toco tonb tonn tono tonu toon toor toot top- topo topp topt topu torc torn toro torp torr tort toru totc toto totr tott toun toup tour tout tpcp tpon tppp tppr tptp tptr tput trcc trno troc tron troo trop trot trou trpc trpn trpp trtc trtr trub truc trun trut truu ttbb ttcn ttcp tton ttop tttt tubb tubo tubr tubu tucc tuco tunb tunc tunn tuno tunu tuor tupo tupu turb turc turn turo turp turr turt turu tuto tutt tutu tuuo u-rp ubbo uboc ubon ubpc ucbc uccp ucon ucpb ucrc ucut uncc unco uncp unct unno unon unop unpc unro untb unto unut uocc uor- upnp upon upor uppc uppp uppu upto upup uro- uroo urpo urun urup urur urut utor utto uttu uucp uuno uuoc uuuu