a-ii aaaa aaab aaai aaap aaar aaas aaba aabb aabi aabp aaib aaii aais aapa aapi aaps aara aari aarp aars aasa aasi aass abaa abab abai abap abar abas abb- abba abbb abbi abbr abbs abia abib abir abis abpa abpi abpp abpr abps abra abri abrs abs- absa absi absp abss aiai aias aiba aiia aiib aiir aipa aipi aips aira airi airp airs aisa aisb aisi aisr apai apap apar apas apba apbr apbs api- apia apip apis appa appr apps apra apri aprs apsa apsi apss arab arai arap arar aras arba arbi arbs aria arib arii arip aris arpa arpi arps arr- arra arri arrr arrs ars- arsa arsi asaa asab asai asap asar asas asba asia asii asip asir asis aspa aspi aspr asps asra asrs assa assi assp assr asss ba-i baaa baar baas baba babb babi babr babs baia baib bair bais bapa bapi bapp baps bar- bara barb bari barr bars basa basi bass bbas bbbb bbbs bbpr biap biar bias biba bibb bibi bibs biis bipa bipp bips bira birb biri birr birs bis- bisa bisp biss bpai bpsa brab brai bras bria bris brrr brrs brsb brsr bsaa bsap bsas bspp bspr bsra iaaa iaai iaap iaas iaba iaia iais iapa iapp iaps iara iars iasa iasi iasp iasr ibar ibas ibia ibis ibra ibri ibsa ibss iias iiii iiis iipa iira iirs iisi iisp iisr ipas ipba ippa ippr ipri ipsa ipsi ipsp ipss irai irap irar iras irbp iri- iria irip iris irpa irps irra irri irrs irsa irsp is-a isai isar isas isba isia isis ispa ispr isps isra isri isrp issa issi issp issr isss paap paar paas paba paia paib paip pair pais papa papb papi papp papr paps par- para pari parp parr pars pasa pasi pasp pass pbar pbpa pbrs pbsa pbsp piai pias pibb pibi piia piip pipa pipi pipp pips pira piri pirr pirs pisa pisi piss ppap ppar ppib pppa pppp ppps ppss prai prar pras prbs pri- pria prii pris prps prri prrs prsa prsi prss psap psas psbr psia psip psis pspi pspp pspr psps psrp pssa raab raas raba rabb rabi rabs raia raii raip rair rais rapa rapi rapp raps rara rarb rari rars rasa rasi rasp rass rbbb rbbr rbbs rbis rbsp rbss riaa riab riai rias rib- riba ribs riia riis ripa ripi ripp ripr rips riri rirs risa risi risp riss rpii rpps rras rrrr rrsp rsaa rsai rsbi rsis rspb rsps rssa s-ib s-ii saab saap saar saas saba sabb sabi sabr sabs saia saip sair sais sapa sapi sapp saps sara sari sarp sarr sars sasa sasi sass sbaa sbai sbar sbas sbbs sbia sbsa sbsi sbsp siaa siab siai sias siba sibi sibs sipa sipi sipp sips sira siri sirp sirr sirs sisa sisi siss sp-a spap spar spas spia spib spip spir spis spps spri sprs spsa spsp spss sras srib sris srps srsp ssaa ssab ssap ssas ssbr ssis sspa ssps ssra ssri ssrs sssa sssb sssi ssss