bbbb bbeb bbet bbpr bbrc bcbc bcbp bccc bcec bcer bcet bcpp bctc bebb bebe beby beeb beep beer beet beey berc bere berr bert bery betc bete bett beye beyt bpcp bprc brcb brce breb brec bree brep brer bret brey brrr brtc bry- brye btbp btcc btec btrc btrt btry bttb byce byer byre byrt byte cbbc cbcc cbce cbcp cbcr cbct cbec cbee cber cbet cbpc cbpp cbre cbrt cbry cbtc cbyt ccbc cccb cccc cccp ccee ccpe ccpp ccpr ccrc ccre ccrp ccrt cctb cctc cctt cebp cec- cece cecp cect ceeb ceec cepc cepe cepp cepr cept cer- cerc cere cerp cert cery cet- cete cetp cpbc cpce cpeb cpep cper cpre cprt cptp cptr crbc crcc crce crcr cre- creb crec cree crep cret crpc crrt crtc crtp cry- cryb ctcp ctec ctep ctpp ctrc ctrp cybb cybc cyc- cycb cycc cypc cyre cyrt cyt- cytb cyte cyy- cyyc ebbc ebbr ebby ebcc eber ecbc ecbe eccb eccc ecce ecct ecpp ecrc ecrr ect- ectc eeby eeee eerc eery eetc eete epcc epec epee eper eppc eppp eppy eprb eprp epte erbb erbe ercc erce ercp ereb erec erer eret erpe errc erre eryc erye etbc etbr etcc etec etee eter etre ette etty eyeb eyec eyer eyet eyey eype eyre eyry eyte eyyr pbcc pcbc pccc pcce pcep pcer pcpb pcpp pcrc pcre pcte pece pecr pect pecy peec peep peer peet pepe per- perc pere perp perr pert pery pete petr pett pety peyr ppcc pper pppp pprc pptt ppye prbc prcc prcp pre- preb prec pree prep pret prey prtc prtp prtr ptcc pter pttc pyce pyep pyet pype pypy pyr- pyre pyry pyte pytt rbbb rbbr rcbc rccb rccc rcep rcet rcpt rctc rcyc rebb rebe recc rece recp recr rect recy reeb reep reet repe repp repr rept repy rere rert rery rete retr rett rety reye rpet rpyc rrrr rtcc rtce rtee rttp rybe rybp ryeb ryet rype rytt ryyt tbcb tbcc tbce tbrb tbtp tcby tccc tcep tcpy tctc tecr tect teec teer teet tepe tepp ter- terc tere terp terr tery tete tetr tett teye teyr tpcp tper tppp tppr tpte tptp tptr trcc tre- trec tree tret trey trpc trpe trpp trtc trte trtr try- tryb trye tryp ttbb ttcp tter tttt tyce tyee tyer tyet typ- type typp typy tyr- tyre tyrr tyte tytt tyty yber ybet ybry yccc ycee yctc yeep yeer yeet yepe yepp yerb yere yerr yert yery yete yett yeye yeyr ypcc ytre yyyy