a-ii aaaa aaab aaai aaar aaas aaba aabb aabi aabt aaib aaii aais aara aari aars aart aasa aasi aass aast aata aatt abaa abab abai abar abas abat abb- abba abbb abbi abbr abbs abbt abia abib abir abis abit abra abri abrs abs- absa absi abss abta abts aiai aias aiba aiia aiib aiir aira airi airs airt aisa aisb aisi aisr aist aita aiti aitr aits aitt arab arai arar aras arat arba arbi arbs aria arib arii aris arit arr- arra arri arrr arrs arrt ars- arsa arsi arst arta arti artr arts asaa asab asai asar asas asat asba asia asii asir asis asit asra asrs assa assi assr asss asst asta astb asti astr asts at-t ataa atab atai atar atas atat atbs atia atis atit atra atri atsb atsi atst atta atti attr atts ba-i baaa baar baas baat baba babb babi babr babs baia baib bair bais bait bar- bara barb bari barr bars bart basa basi bass bast bata bati bats batt bbas bbbb bbbs biar bias biat biba bibb bibi bibs biis bira birb biri birr birs birt bis- bisa biss bist bita bits bitt brab brai bras brat bria bris brit brrr brrs brsb brsr brst bsaa bsas bsat bsra bsts btaa btrt btss bttb iaaa iaai iaas iaat iaba iaia iais iara iars iart iasa iasi iasr iata iati ibar ibas ibat ibia ibis ibra ibri ibsa ibss ibtb ibts iias iiii iiis iiit iira iirs iisi iisr iist iita iitr iitt irai irar iras iri- iria iris irra irri irrs irsa irta irti irts is-a isai isar isas isat isba isbt isia isis isit isra isri issa issi issr isss ista isti istr ists itaa itai itar itas itat itbs itia itis itra itri itrs itsa itsi itta raab raas raat raba rabb rabi rabs raia raii rair rais rait rara rarb rari rars rasa rasi rass rast rata rati rats ratt rbbb rbbr rbbs rbis rbss rbst riaa riab riai rias riat rib- riba ribs riia riis riri rirs risa risi riss rist rita riti rits ritt rras rrat rrrr rsaa rsai rsbi rsis rssa rsts rtai rtas rtss rtts s-ib s-ii saab saar saas saat saba sabb sabi sabr sabs saia sair sais sait sara sari sarr sars sart sasa sasi sass sast sata satb sati satr sats satt sbaa sbai sbar sbas sbbs sbia sbsa sbsi sbst siaa siab siai sias siat siba sibi sibs siit sira siri sirr sirs sirt sisa sisi siss sist sit- sita siti sits sitt sras srib sris srta srtr ssaa ssab ssas ssat ssbr ssis ssit ssra ssri ssrs sssa sssb sssi ssss ssta sstb ssts stab stai star stas stat stbs stia stib stir stis stit stra stri strs stsi stss sttr taa- taar taas taat taba tabb tabi tabs taia tair tais tait tara tarb tari tarr tars tart tasa tasb tasi tasr tass tast tata tatb tati tatr tats tatt tbar tbas tbbs tbit tbrb tbst tbta tiaa tiab tiar tias tiba tibi tibs tiit tira tirb tiri tirr tirs tisa tisb tisi tiss tist tita titi tits titt traa trab trai tras trat tri- tria trib tris trit trra trsi trst trtr tsaa tsai tsar tsat tsia tsis tssa tssi tssr tsst tsts ttab ttbb ttss tttt