a-ii aaaa aaab aaaf aaai aaar aaas aaba aabb aabi aabt aafa aafb aaff aafi aaib aaii aais aara aari aars aart aasa aasf aasi aass aast aata aatf aatt abaa abab abaf abai abar abas abat abb- abba abbb abbi abbr abbs abbt abff abia abib abir abis abit abra abri abrs abs- absa absf absi abss abta abts afaa afar afat afbs affa affi affs afft afia afib afif afir afis afit afr- afra afri afrs afsa afsb afst afta afts aiai aias aiba aiff aifs aiia aiib aiir aira airi airs airt aisa aisb aisi aisr aist aita aitf aiti aitr aits aitt arab araf arai arar aras arat arba arbi arbs arfa arfb arff arfs arft aria arib arif arii aris arit arr- arra arri arrr arrs arrt ars- arsa arsi arst arta arti artr arts asaa asab asaf asai asar asas asat asba asfa asfi asia asif 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 atfb atfs atia atif atis atit atra atri atsb atsi atst atta atti attr atts ba-i baaa baaf baar baas baat baba babb babi babr babs baff baft baia baib bair bais bait bar- bara barb barf bari barr bars bart basa basf basi bass bast bata batf bati bats batt bbas bbbb bbbs bfas bffs bfsi bfsr bfta bfts bftt biaf biar bias biat biba bibb bibi bibs bifa biff bifi biis bira birb biri birr birs birt bis- bisa biss bist bita bits bitt brab braf brai bras brat bria bris brit brrr brrs brsb brsr brst bsaa bsas bsat bsfa bsff bsfs bsra bsts btaa btaf btrt btss bttb faaa faas faba fabi fabs fafa faff fafi fair fais fait fara farb farr fars fart fasa fasi fass fast fata fatf fati fats fatt fbar fbis fbrs ffar ffff ffii ffrr ffsa ffss fftf fiaa fiaf fiar fias fiat fiba fibs fifa fiff fifi fift fiii fira firs fisa fisi fiss fist fita fiti fits fitt frab fras frat fria frib fris frit frsb frst frta fsai fsas fsfi fsia fsra fssa fssf fsta ftii ftrs ftsa ftsr iaaa iaai iaas iaat iaba iaff iaia iais iara iars iart iasa iasi iasr iata iati ibar ibas ibat ibfi ibia ibis ibra ibri ibsa ibsf ibss ibtb ibts ifaa ifar ifas ifat ifbb ifis ifit ifra ifrb ifrf ifri ifsa ifsb ifta iias iifa iiii iiis iiit iira iirs iisi iisr iist iita iitr iitt iraf irai irar iras iri- iria iris irra irri irrs irsa irsf irta irtf irti irts is-a isaf isai isar isas isat isba isbt isfa isia isis isit isra isri issa issf issi issr isss ista isti istr ists itaa itaf itai itar itas itat itbs itfa itia itif itis itra itrf itri itrs itsa itsf itsi itta ittf raab raaf raas raat raba rabb rabi rabs rafa raff rafi raft raia raif raii rair rais rait rara rarb rarf rari rars rasa rasi rass rast rata ratf rati rats ratt rbaf rbbb rbbr rbbs rbis rbss rbst riaa riab riai rias riat rib- riba ribs rifa riff rifs rift riia riif riis riri rirs risa risi riss rist rita riti rits ritt rras rrat rrif rrrr rsaa rsaf rsai rsbi rsis rssa rsts rtai rtas rtbf rtfb rtss rtts s-ib s-ii saab saaf saar saas saat saba sabb sabi sabr sabs safa safb saff safi safr saft saia saif sair sais sait sara sarf sari sarr sars sart sasa sasf sasi sass sast sata satb sati satr sats satt sbaa sbai sbar sbas sbbs sbia sbsa sbsi sbst sfar sfas sfba sfia sfra sfss sfts siaa siab siaf siai sias siat siba sibi sibs sifa siff sifr sift siit sira sirf siri sirr sirs sirt sisa sisi siss sist sit- sita siti sits sitt sraf sras srfi srib sris srta srtr ssaa ssab ssas ssat ssbr ssis ssit ssra ssri ssrs sssa sssb sssf sssi ssss ssta sstb ssts stab stai star stas stat stbs stia stib stif stir stis stit stra stri strs stsf stsi stss sttr taa- taaf taar taas taat taba tabb tabi tabs tafa taff tafi taft taia tair tais tait tara tarb tarf tari tarr tars tart tasa tasb tasi tasr tass tast tata tatb tati tatr tats tatt tbaf tbar tbas tbbs tbit tbrb tbst tbta tfrs tfsi tfss tiaa tiab tiaf tiar tias tiba tibi tibs tifa tiff tift tiit tira tirb tiri tirr tirs tisa tisb tisi tiss tist tita titi tits titt traa trab traf trai tras trat trfr tri- tria trib trif tris trit trra trsi trst trtr tsaa tsai tsar tsat tsia tsis tssa tssf tssi tssr tsst tsts ttab ttbb ttfa ttff ttss tttt