-ase a-be aaaa aaab aaae aaap aaas aaba aabb aabp aaea aaep aaes aapa aaps aasa aase aass abaa abab abae abap abas abb- abba abbb abbe abbs abee abes abpa abpp abps abs- absa abse absp abss aeap aeas aebs aess apap apas apba apbs apea apep apes appa apps apsa apse apss asaa asab asae asap asas asba asea asee asep ases aspa aspe asps assa asse assp asss baaa baas baba babb babe babs baes bapa bape bapp baps basa base bass bbas bbbb bbbs bbeb beap beas beba bebb bebe beeb beep bees bes- besa bese bess bpea bpsa bsaa bsap bsas bsea bseb bsee bses bspp bsse eaba eapp eaps easa ease ebba ebbs ebes ebsa eeea eeee eees eeps eese epaa epas epee epes eppa eppp epps epsa epsp epss esab esas esba esbs esea esee eses espa espe espp esps essa esse essp paap paas paba paea paep paes papa papb pape papp paps pasa pase pasp pass pbpa pbsa pbsp peab peap peas peba peep pees pepa pepe peps pesa pese pess ppap pppa pppp ppps ppss psap psas pseb pspp psps pssa psse saab saae saap saas saba sabb sabe sabs saeb saes sapa sape sapp saps sasa sase sass sbaa sbas sbbs sbsa sbse sbsp se-e se-s seaa seab seap seas seba sebe sebs seea seeb seep sees sepa sepe sepp seps sesa sese sess sp-a spae spap spas spea speb spee spes spps spsa spse spsp spss ssaa ssab ssap ssas ssee ssep sses sspa sspe ssps sssa sssb ssss