a-ii aaaa aaab aaai aaap aaas aaba aabb aabi aabp aabt aaib aaii aais aapa aapi aaps aapt aasa aasi aass aast aata aatt abaa abab abai abap abas abat abb- abba abbb abbi abbs abbt abia abib abis abit abpa abpi abpp abps abs- absa absi absp abss abta abts aiai aias aiba aiia aiib aipa aipi aips aisa aisb aisi aist aita aiti aits aitt apai apap apas apat apba apbs api- apia apip apis apit appa apps appt apsa apsi apss apta apti apts aptt asaa asab asai asap asas asat asba asia asii asip asis asit aspa aspi asps aspt assa assi assp asss asst asta astb asti astp asts at-t ataa atab atai atap atas atat atbs atia atip atis atit atsb atsi atst atta atti attp atts ba-i baaa baas baat baba babb babi babs baia baib bais bait bapa bapi bapp baps bapt basa basi bass bast bata bati bats batt bbas bbbb bbbs biap bias biat biba bibb bibi bibs biis bipa bipp bips bis- bisa bisp biss bist bita bits bitt bpai bpsa bpti bsaa bsap bsas bsat bspp bsts btaa btbp btps btss bttb iaaa iaai iaap iaas iaat iaba iaia iais iapa iapp iaps iapt iasa iasi iasp iata iati ibas ibat ibia ibis ibsa ibss ibtb ibts iias iiii iiis iiit iipa iisi iisp iist iita iitt ipas ipat ipba ippa ipsa ipsi ipsp ipss ipta ipts is-a isai isas isat isba isbt isia isis isit ispa isps issa issi issp isss ista isti istp ists itaa itai itap itas itat itbs itia itis itpa itsa itsi itsp itta paap paas paat paba pabt paia paib paip pais pait papa papb papi papp paps pasa pasi pasp pass past pata pati pats patt pbpa pbsa pbsp piai pias piat pibb pibi piia piip pipa pipi pipp pips pisa pisi piss pist pita piti pits pitt ppap ppib pppa pppp ppps ppss ppta ppts pptt psap psas psat psbt psia psip psis pspi pspp psps pssa psst psts ptab ptas ptsa s-ib s-ii saab saap saas saat saba sabb sabi sabs saia saip sais sait sapa sapi sapp saps sasa sasi sass sast sata satb sati sats satt sbaa sbai sbas sbbs sbia sbsa sbsi sbsp sbst siaa siab siai sias siat siba sibi sibs siit sipa sipi sipp sips sipt sisa sisi siss sist sit- sita siti sits sitt sp-a spap spas spat spia spib spip spis spit spps spsa spsp spss spst spta sptb spts ssaa ssab ssap ssas ssat ssis ssit sspa ssps sspt sssa sssb sssi ssss ssta sstb sstp ssts stab stai stap stas stat stbs stia stib stip stis stit stpp stps stsi stss taa- taas taat taba tabb tabi tabs taia taip tais tait tapa tapi tapp taps tapt tasa tasb tasi tasp tass tast tata tatb tati tats tatt tbas tbbs tbit tbsp tbst tbta tbtp tiaa tiab tias tiba tibi tibs tiit tip- tipa tipi tipp tips tipt tisa tisb tisi tiss tist tita titi titp tits titt tpap tpia tppa tppp tpsa tptp tsaa tsai tsat tsia tsis tsps tspt tssa tssi tsst tsts ttab ttbb ttss tttt