a-be aaaa aaab aaae aaap aaba aabb aabp aabt aaea aaep aage aaoe aaoo aapa aapo aapt aata aatt abaa abab abae abag abap abat abb- abba abbb abbe abbo abbt abee abet aboa abob aboo abot abpa abpp abta aeap aega aeta aeto aett ag-o agag agao agap agat agba agbo agea agee agep aget agga agge agob agog agoo agot agta agte aoba aopo apao apap apat apba apbg apea apeg apep apet apga apo- apoe apoo apop apot appa appt apta apte aptt at-t ataa atab atae atap atat atea atee ateo atep atgo atob atoe atop atot atta atte atto attp baaa baat baba babb babe babo baga bage bagg bago bagt bapa bape bapp bapt bata bate bato batt bbbb bbeb bbet bbga beag beap beat beba bebb bebe bebo beeb beeg beep beet bega begg bego beo- beot bepo beta bete beto bett boab boag boat boba bobb bobe bobo boea boee boeo boep boet boga boge bogg bogo bogt boob booe boog boop boot bopa bope bopp bota botb bote boto bott bpea bpoe bpot btaa btbp btob bttb eaba eaga eage eaop eapp eata eate ebba ebbo eboe eboo ebpo eeea eeee eega eeta eete egaa egae egao egat egba egbe egea egee eggb egge eggo eggp ego- egot egpa egpb egpe egpo egta egte eota eoto epaa epee epot eppa eppo eppp epta epte etag etap etat etee etoe etta ette etto gaap gaba gabb gabe gabo gabp gabt gaea gaga gage gagg gago gapa gape gapp gapt gata gate gato gatt gbag gbap gbbo geab geat geba gebe geep geet gege gegg gego geo- geog gepa gepe geta getb gete getg geto gett ggbt gggg ggpo goat goba gobe gobo goga gogo goog goop goot gope gopo gota gote goto gott gpaa gpgp gpot gtaa gtap gtea gtoe gtop gtta o-eo oate obba obbo obea obet oboe obot oegb oepa oeta ogae ogb ogba ogbe ogea ogee ogge ogoa ogog ooaa ooba oobe oooo ootb ootp opap opep opet opo- oppa oppo opto otap otea otee otep oto- otoe otog otoo otpp otta otte otto paag paap paat paba pabt paea paep paga pagb page pago papa papb pape papg papp pata pate pato patt pbpa peab peag peap peat peba peep peet pega pegg pego pepa pepe pepo peta pete peto pett pgaa poat poba pobo poea poet poge pogg pogo poop poot pop- popa pope popo popp popt pota pote poto pott ppap ppga ppoa pppa pppo pppp ppta pptt ptab ptop taa- taag taat taba tabb tabe tabo taga tage tagg tago taoa tapa tape tapo tapp tapt tata tatb tate tato tatt tbta tbtp teat teba tebo teet tega tegg tego tegt tepa tepe tepp teta tete teto tett toab toat toba tobe tobo tobt toea toee toet toga toge togo togt tooa toot top- topa tope topo topp topt tota tote toto tott tpap tpbg tpeg tppa tppp tpte tptp ttab ttbb tteo ttoe ttop tttt