bbbb bbeb bbet bbfc bbpr bbrc bcbc bcbp bccc bcec bcer bcet bcfc bcpp bcru bctc bcuc bcup bebb bebe becu beeb beef beep beer beet befe beff beft berc bere berr bert beru betc bete bett betu beur bfpp bftt bpcp bpfc bprc bptf brcb brce breb brec bree bref brep brer bret brfc brfu brrr brtc bruc brue brup brut btbp btcc btec btfc btrc btrt bttb bubb bube bubu bucc buce bucu buer bueu bufc bufe buff bufr bupc bur- burb bure burp burr burt buru but- bute butt cbbc cbcc cbce cbcp cbcr cbct cbcu cbec cbee cbef cber cbet cbfb cbfc cbpc cbpp cbre cbrt cbtc cbtf ccbc cccb cccc cccf cccp cccu ccee ccfc ccff ccpe ccpp ccpr ccrc ccre ccrf ccrp ccrt cctb cctc cctt ccuc ccup ccut cebp cebu cec- cece cecp cect ceeb ceec cef- cefc cepc cepe cepp cepr cept cer- cerc cere cerf cerp cert cet- cete cetp cfbc cfbr cfbt cfcb cfcf cffb cffr cfpr cfrb cfre cfrp cfrt cftc cfte cftr cpbc cpce cpcu cpeb cpep cper cpff cpft cpre cprt cptp cptr crbc crbu crcc crce crcr cre- creb crec cree crep cret creu crfc crpc crrt crtc crtf crtp crub crue crup crut ctcf ctcp ctec ctep ctfc ctpp ctrc ctrp cub- cubb cube cucc cuce cuer cufc cuff cupe cupp cupr curb cure curf curr curt cut- cutc cute cutt ebbc ebbr ebcc eber ebfc ebru ebur ecbc ecbe eccb eccc ecce ecct ecef ecfc ecfr ecpp ecrc ecrf ecrr ecru ect- ectc ectf eeee eefe eerc eetc eete eetu efbr efet eft- eftp eftu epcc epec epee eper epfc eppc eppp eprb eprp epte epub erbb erbe ercc erce ercp ereb erec erer eret erfc erft erpe errc erre ertu erub eruc erur etbc etbr etcc etec etee eter etfb etfc etfe etre ette ettu eubc euer eufc eur- eurc eure eurt fccf fccp fcup fece fect feeb feer feet fefc fefe feff fepc ferb ferc fere ferr fert feru fete fetp fetr fett fetu ffcc ffee ffff ffrr fftf fp-c fpcc fpct fprf frbc frcc frcp free frep fret frfc frub frue ft-c fter ftfc ftpe ftub ftuc fubb fubu fuc- fuct fuet fufc fuff fufu fur- fure furr furt fute futu pbcc pbrf pcbc pccc pcce pcep pcer pcfc pcpb pcpp pcrc pcre pcrf pcte pece pecr pect peec peep peer peet pefc peff pepe per- perc pere perf perp perr pert peru pete petr pett peur peut pfcb pfce pfet pfff pffr pfft pfte ppcc pper pppp pprc pprf ppru pptt ppur prbc prcc prcf prcp pre- preb prec pree pref prep pret preu prfc prtc prtp prtr prue pruf prut pruu ptcc pter ptrf pttc pu-e pube pubu puce puer puet pueu puff puft pupe pupu pur- purb pure purp purr puru put- pute putt putu puuc rbbb rbbr rcbc rccb rccc rcep rcet rcfc rcpt rctc rebb rebe rebu recc rece recp recr rect recu reeb reef reep reet refe reff refr reft refu repe repp repr rept repu rere rert reru rete retr rett reue reuf reup reut reuu rfef rffc rftc rpet rpfc rrfc rrrr rtbf rtcc rtce rtee rtfb rtfc rttp rubb rube rubp rubu ruce ruct ruer ruet rufc rufe ruff ruft rupe rupp rupt rurc rure rurp ruru rute rutt rutu tbcb tbcc tbce tbrb tbtp tccc tccu tcep tcfc tctc tebu tecr tect teec teef teer teet tefc teff teft tepe tepp tepu ter- terc tere terf terp terr teru tete tetr tett tetu teut tfcu tfeb tfec tfpt tftc tftp tpcp tper tppp tppr tpte tptp tptr tput trcc tre- trec tree tref tret treu trfc trfr trpc trpe trpp trtc trte trtr trub truc true trut truu ttbb ttcp tter ttfc ttff tttt tubb tube tubr tubu tucc tuer tuet tufc tufe tuff tuft tufu tupe tupu turb turc ture turf turp turr turt turu tute tutt tutu u-rp ubbe uber ubet ubpc ubtf ucbc uccp ucfb ucpb ucrc ucut ufcu ufer uffe ufpb uftp upbe uppc uppe uppp uppu upup urbe ure- uret urfe urff urft urre urte urup urur urut utec utep uter uttu uucp uutf uuuu