a-be aaaa aaab aaac aaae aaap aaba aabb aabc aabp aabt aaca aacb aacc aace aaco aacp aact aaea aaec aaep aaoe aaoo aapa aapc aapo aapt aata aatc aatt abaa abab abac abae abap abat abb- abba abbb abbe abbo abbt abca abcb abcc abcp abct abec abee abet aboa abob aboo abot abpa abpc abpp abta ac-t acaa acab acac acae acap acat acba acca accc acce acco accp acct ace- acea acec acet acoa acoe acop acot acpa acpe acpt acta actc acte acto actt aeac aeap aecb aect aeta aetc aeto aett aoba aoca aoce aopo aotc apac apao apap apat apba apca apcb apcc apco apea apec apep apet apo- apoc apoe apoo apop apot appa appc appt apta aptc apte aptt at-t ataa atab atac atae atap atat atca atcc atco atea atec atee ateo atep atob atoc atoe atop atot atta atte atto attp baaa baat baba babb babe babo bac- baca bacc bace baco bact bapa bapc bape bapp bapt bata batc bate bato batt bbbb bbeb bbet bcaa bcap bcat bcbc bcbp bcca bccc bcec bcet bcpp bctc beap beat beba bebb bebe bebo beca beeb beep beet beo- beot bepo beta betc bete beto bett boab boac boat boba bobb bobe bobo boca boce boco boea boec boee boeo boep boet boob booc booe boop boot bopa bope bopp bota botb bote boto bott bpcp bpea bpoe bpot btaa btbp btcc btec btob bttb c-bo caaa caab caac caap caat caba cabe cabo cac- caca cacc cace caco caec capa capb capc cape capo capp capt cat- cata catb catc cate cato catt cbac cbat cbbc cbca cbcc cbce cbcp cbct cbea cbec cbee cbet cbot cbpc cbpp cbta cbtc ccaa ccab ccac ccap ccat ccba ccbc ccca cccb cccc cccp ccee ccob ccoc ccpa ccpe ccpp cctb cctc cctt ceac ceat ceba cebp cec- ceca cece ceco cecp cect ceeb ceec ceop cepa cepc cepe cepo cepp cept cet- ceta cete ceto cetp coat coba cobb cobe cobo coca coce coco cocp coct coep coob coop coot copa cope copo copp copt cota cotb cotc cote coto cott cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cppa cptp ctab ctae ctba ctca ctcp ctec ctep ctot ctpo ctpp ctta eaba eaca eacc eaec eaop eapc eapp eata eate ebac ebba ebbc ebbo ebcc eboe eboo ebpo ecaa ecac ecao ecat ecbc ecbe ecca eccb eccc ecce ecco ecct eco- ecop ecot ecpa ecpp ect- ecta ectc ecto eeca eeea eeee eeoc eeta eetc eete eota eotc eoto epaa epac epcc epec epee epoc epot eppa eppc eppo eppp epta epte etap etat etbc etcc etco etec etee etoe etta ette etto o-eo oate obba obbo obea obec obet oboe obot ocab ocac ocap ocat ocbc occa occc occt oce ocee ocet ocpa ocpp oct- octa octe octo oec- oeca oecc oeec oepa oeta ooaa ooba oobe oooo ootb ootp opap opca opec opep opet opo- oppa oppo opto otac otap otea otee otep oto- otoe otoo otpp otta otte otto paap paat paba pabt paca pace paco pact paea paec paep paoc papa papb pape papp pata pate pato patt pbac pbcc pboc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcoa pcoe pcpb pcpp pcte peab peac peap peat peba peca pece peco pect peec peep peet pepa pepe pepo peta pete peto pett poat poba pobo poca poce poco poea poet poop poot pop- popa popc pope popo popp popt pota potc pote poto pott ppac ppap ppcc ppoa pppa pppo pppp ppta pptt ptab ptca ptcc ptop pttc taa- taat taba tabb tabc tabe tabo taca tacc tace taco tact taec taoa tapa tape tapo tapp tapt tata tatb tate tato tatt tbca tbcb tbcc tbce tbta tbtp tcap tcca tccc tcep tcpa tcpo tctc teac teat teba tebo teca teco tect teec teet tepa tepe tepp teta tete teto tett toab toat toba tobe tobo tobt toca toce toco toea toee toet tooa toot top- topa tope topo topp topt tota totc tote toto tott tpac tpap tpcp tppa tppp tpte tptp ttab ttbb ttcp tteo ttoe ttop tttt