bbbb bbci bbeb bbet bbpr bbrc bcbc bcbp bccc bcci bcec bcer bcet bcie bcit bcpp bcru bctc bcuc bcup bebb bebe bebi beci becu beeb beep beer beet beic beir beit berc bere beri berr bert beru betc bete beti bett betu beur bibb bibe bibi bicc bice bici bieb bier biet bieu bipp bipu birb bire biri birr birt biru bitc bite bitt bitu bpcp bprc bpti brcb brce breb brec bree brei brep brer bret bric brie brit brrr brtc bruc brue brup brut btbp btcc btec btie btrc btrt bttb bubb bube bubi bubu bucc buce buci bucu buer bueu buic buie buir buit buiu bupc bur- burb bure buri burp burr burt buru but- bute buti butt cbbc cbcc cbce cbcp cbcr cbct cbcu cbec cbee cber cbet cbir cbit cbpc cbpp cbre cbrt cbtc ccbc cccb cccc ccci cccp cccu ccee ccic ccii ccip ccir ccpe ccpp ccpr ccrc ccre ccri ccrp ccrt cctb cctc cctt ccuc ccup ccut cebp cebu cec- cece ceci cecp cect ceeb ceec ceip cepc cepe cepp cepr cept cer- cerc cere ceri cerp cert cet- cete ceti cetp ceui cibc cibe cibi cicc cici cicr cict cicu ciee cier ciii ciit cipp cirb circ cire ciri cirr cirt citb cite citi citp citt citu ciuc ciup cpbc cpce cpcu cpeb cpep cper cpic cpre cpri cprt cptp cptr crbc crbu crcc crce crcr cre- creb crec cree crei crep cret creu crib cric crie crip crit criu crpc crrt crtc crtp crub crue crup crut ctbi ctcp ctec ctep ctic ctpp ctrc ctrp cub- cubb cube cubi cucc cuce cuci cuer cui- cuir cuit cupe cupp cupr curb cure curi curr curt cut- cutc cute cutt ebbc ebbr ebcc eber ebic ebit ebru ebur ecbc ecbe eccb eccc ecce ecci ecct ecib ecip ecit ecpp ecrc ecri ecrr ecru ect- ectc eeee eerc eetc eete eetu eiec eiei eier eipr eire eitb eitc eiti eitr epcc epci epec epee eper epi- epic epie epip epit eppc eppp eprb eprp epte epub erbb erbe ercc erce ercp ereb erec erei erer eret eric erie erit eriu erpe errc erre ertu erub eruc erur etbc etbr etcc etec etee eter etic etre ette etti ettu etui eubc eubi euer eur- eurc eure eurt i-be ibec ibet ibie ibrc ibri ibtb ibtc icbc icbp iccb iccc icci iccp iccr icct iccu icec icee icer icet icpc icrc icre icrr icrt icru ictp icub icue icup iecc ieet ieie iere ieri iett iiie iiii iiit iirc iitr iitt iiuc ipcc ipce ipct ipec iper ipet ipie ippc ippr ipri iptc ipur iput irbe irbp ircc ircu iree irer iri- iric irie irip irpc irpe irrc irre irri irte irti irtp itbe itec itep iter itet itic itie itpc itri itup itur iucc iuce iuiu iupp pbcc pcbc pccc pcce pcep pcer pcip pcpb pcpp pcrc pcre pcte pece peci pecr pect peec peep peer peet peip peir peit pepe pepi per- perc pere peri perp perr pert peru pete peti petr pett peur peut pibb pibi picc pice pici picr pict picu piep pier piet piip pipe pipi pipp pirc pire piri pirr piru pite piti pitr pitt pitu ppcc ppci pper ppib ppic ppie pppp pprc ppru pptt ppur prbc prcc prcp pre- preb prec pree prep pret preu pri- prie prii prri prtc prti prtp prtr prue prut pruu ptcc pter pttc ptui pu-e pube pubu puce puer puet pueu puir puit puiu pupe pupi pupu pur- purb pure puri purp purr puru put- pute puti putt putu puuc rbbb rbbr rcbc rccb rccc rcep rcet rcic rcpi rcpt rctc rcti rebb rebe rebu recc rece reci recp recr rect recu reeb reep reet reii reir reit reiu repe repi repp repr rept repu rere reri rert reru rete reti retr rett reue reup reut reuu rib- ribe ribu ricc rice rict riep rier riet rieu ripe ripi ripp ripr ript rire riri rite riti ritt ritu riue rpet rpii rrrr rtcc rtce rtee rtei rttp rubb rube rubi rubp rubu ruce ruci ruct ruer ruet ruit rupe rupp rupt rurc rure ruri rurp ruru rute ruti rutt rutu tbcb tbcc tbce tbit tbrb tbtp tccc tccu tcep tctc tebu tecr tect teec teer teet teic teie teip teir teiu tepe tepi tepp tepu ter- terc tere teri terp terr teru tete teti tetr tett tetu teut tibi tibu ticc tice tie- tiee tiei tiep tier tiet tiit tiiu tip- tipc tipe tipi tipp tipt tipu tirb tire tiri tirr tiru titc tite titi titp titt titu tpcp tper tpir tppp tppr tpte tptp tptr tput trcc tre- trec tree trei tret treu tri- trib tric trie trip trit trpc trpe trpp trtc trte trtr trub truc true trut truu ttbb ttcp tter tttt tubb tube tubr tubu tucc tuei tuer tuet tuit tuiu tupe tupi tupu turb turc ture turi turp turr turt turu tute tuti tutt tutu u-ie u-rp ubbe ubbi uber ubet ubic ubii ubir ubit ubpc ucbc ucci uccp ucpb ucrc ucut ueir uepi uipi uirr upbe upci upic upie uppc uppe uppp uppu upri upup urbe urbi urci ure- uret urib uric urie uriu urre urri urte urup urur urut utec utep uter utri utti uttu uucp uuri uuuu