a-be aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aabt aaca aacb aacc aace aaco aacp aacr aact aaea aaec aaep aaoe aaoo aapa aapc aapo aapt aara aarc aare aaro aarp aart aata aatc aatt abaa abab abac abae abap abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcp abcr abct abec abee aber abet aboa abob aboo abor abot abpa abpc abpp abpr abra abrc abro abta ac-t acaa acab acac acae acap acar acat acba acca accc acce acco accp acct ace- acea acec acer acet acoa acoe acop acor acot acpa acpe acpr acpt acr- acra acrc acre acro acrr acta actc acte acto actt aeac aeap aecb aect aeer aer- aera aerc aero aeta aetc aeto aetr aett aoba aoca aoce aopo aora aorb aort aotc apac apao apap apar apat apba apbr apca apcb apcc apco apcr apea apec apep aper apet apo- apoc apoe apoo apop apor apot appa appc appr appt apra aprc apre apro aprt apta aptc apte aptt arab arac arae arap arar arat arba arbe arc- arca arce arco arct area arec aree areo arep aret aroa arob aroe aroo aror arpa arpe arr- arra arrc arre arro arrr arrt arta artc arte arto artr at-t ataa atab atac atae atap atar atat atca atcc atco atcr atea atec atee ateo atep ater atob atoc atoe atop ator atot atpr atra atrc atre atro atrp atta atte atto attp attr baaa baar baat baba babb babe babo babr bac- baca bacc bace baco bact baer bapa bapc bape bapp bapt bar- bara barb barc bare baro barr bart bata batc bate bato batt bbbb bbeb bbet bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcec bcer bcet bcor bcpp bcra bctc beap bear beat beba bebb bebe bebo beca beeb beep beer beet beo- beor beot bepo bera berc bere bero berr bert beta betc bete beto bett boab boac boar boat boba bobb bobe bobo boca boce boco boea boec boee boeo boep boer boet boob booc booe boop boor boot bopa bope bopp bor- bora bore boro borr bort bota botb bote boto bott bpcp bpea bpoe bpot bprc brab brac brae brao brat brca brcb brce brea breb brec bree breo brep brer bret broa brob broc broe broo bror brot brrr brtc btaa btbp btcc btec btob btor btrc btrt bttb c-bo caaa caab caac caap caat caba cabe cabo cac- caca cacc cace caco cacr caec caer caor capa capb capc cape capo capp capt cara carb carc care caro carp carr cart cat- cata catb catc cate cato catt cbac cbar cbat cbbc cbca cbcc cbce cbcp cbcr cbct cbea cbec cbee cber cbet cbot cbpc cbpp cbre cbrt cbta cbtc ccaa ccab ccac ccap ccar ccat ccba ccbc ccca cccb cccc cccp ccee ccob ccoc ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccrt cctb cctc cctt ceac cear ceat ceba cebp cec- ceca cece ceco cecp cect ceeb ceec ceop ceor cepa cepc cepe cepo cepp cepr cept cer- cera cerc cere cero cerp cert cet- ceta cete ceto cetp coat coba cobb cobe cobo coca coce coco cocp coct coep coob coop coot copa cope copo copp copr copt cor- cora corb corc core coro corp corr cort cota cotb cotc cote coto cott cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cper cppa cpre cprt cptp cptr crab crac crap crar crat crbc crca crcc crce crcr cre- crea creb crec cree creo crep cret crob croc croe croo crop cror crot crpc crrt crtc crtp ctab ctae ctba ctca ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp ctta eaba eaca eacc eaec eaop eapc eapp eara earb eare earo earp eart eata eate ebac ebba ebbc ebbo ebbr ebcc eber eboe eboo ebor ebpo ebro ecaa ecac ecao ecar ecat ecbc ecbe ecca eccb eccc ecce ecco ecct eco- ecop ecot ecpa ecpp ecra ecrc ecrr ect- ecta ectc ecto eeca eeea eeee eeoc eera eerc eero eeta eetc eete eora eore eota eotc eoto epaa epac epcc epec epee eper epoc epor epot eppa eppc eppo eppp epra eprb epro eprp epta epte erap erat erba erbb erbe erca ercc erce ercp ereb erec erer eret erob eroc eroe eroo erpa erpe erra errc erre erro erta etap etat etbc etbr etcc etco etec etee eter etoe etra etre etro etta ette etto o-eo oaer oara oare oate obba obbo obea obec ober obet oboe obor obot obra obre obro ocab ocac ocap ocat ocbc occa occc occt oce ocee ocet ocpa ocpp ocra ocre ocro ocrr oct- octa octe octo oec- oeca oecc oeec oepa oera oere oeta ooaa ooba oobe oocr ooer oooo oora oore oort ootb ootp opap opar opca opec opep oper opet opo- opor oppa oppo opra opto orab orac orae orao orar orat orba orbb orbe orbo orca orce orco ore- orea oreb orec oreo orer oro- oroe oror orot orpc orpe orra orro orta ortc orte orto otac otap otar otea otee otep oter oto- otoe otoo otor otpp otra otre otro otta otte otto paap paar paat paba pabt paca pace paco pact paea paec paep paer paoc papa papb pape papp papr par- para parc pare paro parp parr part pata pate pato patr patt pbac pbar pbcc pboc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcer pcoa pcoe pcpb pcpp pcra pcrc pcre pcte peab peac peap pear peat peba peca pece peco pecr pect peec peep peer peet peor pepa pepe pepo per- pera perc pere pero perp perr pert peta pete peto petr pett poar poat poba pobo poca poce poco poea poer poet poop poor poot pop- popa popc pope popo popp popt pora porb porc pore poro porr port pota potc pote poto pott ppac ppap ppar ppcc pper ppoa pppa pppo pppp pprc ppta pptt prae prao prar