-ana aaaa aaab aaan aaap aaas aaba aabb aabp aabt aana aanp aapa aaps aapt aasa aass aast aata aatt abaa abab aban abap abas abat abb- abba abbb abbs abbt abpa abpn abpp abps abs- absa absp abss abta abts ana- anaa anab anan anap anas anat anba anbb anna annb anns annt anp- anpa anpp ansa ansp ant- anta ants antt apan apap apas apat apba apbs apna appa apps appt apsa apss apta aptn apts aptt asaa asab asan asap asas asat asba aspa asps aspt assa assn assp asss asst asta astb astp asts at-t ataa atab atan atap atas atat atbs atna atns atsb atst atta attn attp atts baaa baan baas baat baba babb babs bana bann banp bans bant bapa bapp baps bapt basa bass bast bata batn bats batt bbas bbbb bbbs bnas bnpp bnss bnta bpsa bsaa bsap bsas bsat bsns bspp bsts btaa btan btbp btps btss bttb naaa naab naan naas naat naba nabs nan- nana nanb nann nanp nans nant napa napb napp naps napt nas- nasa nasb nasp nass nast nata natp nats natt nbaa nbap nbas nbpa nbpp nbps nbsp nnnn nnsa nnss nntn npap npas npat nppa npsa npss npta nptn nsaa nsna nsps nssa nssb nssp nsss nstp nsts ntap ntpa ntsb ntss paan paap paas paat paba pabt pan- pana pann pans pant papa papb papp paps pasa pasp pass past pata pats patt pban pbpa pbsa pbsp pnas pnpp ppan ppap pppa pppn pppp ppps ppss ppta pptn ppts pptt psap psas psat psbt psna pspp psps pssa psst psts ptab ptas ptsa saab saan saap saas saat saba sabb sabs sana sann sans sant sapa sapp saps sasa sass sast sata satb satn sats satt sbaa sbas sbbs sbsa sbsp sbst sbtn snab snap snas snat snba snns snpp sp-a span spap spas spat spns spps spsa spsp spss spst spta sptb spts ssaa ssab ssan ssap ssas ssat ssbn ssns sspa ssps sspt sssa sssb ssss ssta sstb sstp ssts stab stan stap stas stat stbs stnn stns stpp stps stss taa- taan taas taat taba tabb tabs tana tann tans tant tapa tapp taps tapt tasa tasb tasp tass tast tata tatb tats tatt tbas tbbs tbsp tbst tbta tbtp tnsp tnts tpap tppa tppp tpsa tptp tsaa tsat tsna tspn tsps tspt tssa tsst tsts ttab ttbb ttss tttt