a-ii aaaa aaab aaaf aaai aaar aaba aabb aabi aabt aafa aafb aaff aafi aaib aaii aara aari aart aata aatf aatt abaa abab abaf abai abar abat abb- abba abbb abbi abbr abbt abff abia abib abir abit abra abri abta afaa afar afat affa affi afft afia afib afif afir afit afr- afra afri afta aiai aiba aiff aiia aiib aiir aira airi airt aita aitf aiti aitr aitt arab araf arai arar arat arba arbi arfa arfb arff arft aria arib arif arii arit arr- arra arri arrr arrt arta arti artr at-t ataa atab atai atar atat atfb atia atif atit atra atri atta atti attr ba-i baaa baaf baar baat baba babb babi babr baff baft baia baib bair bait bar- bara barb barf bari barr bart bata batf bati batt bbbb bfta bftt biaf biar biat biba bibb bibi bifa biff bifi bira birb biri birr birt bita bitt brab braf brai brat bria brit brrr btaa btaf btrt bttb faaa faba fabi fafa faff fafi fair fait fara farb farr fart fata fatf fati fatt fbar ffar ffff ffii ffrr fftf fiaa fiaf fiar fiat fiba fifa fiff fifi fift fiii fira fita fiti fitt frab frat fria frib frit frta ftii iaaa iaai iaat iaba iaff iaia iara iart iata iati ibar ibat ibfi ibia ibra ibri ibtb ifaa ifar ifat ifbb ifit ifra ifrb ifrf ifri ifta iifa iiii iiit iira iita iitr iitt iraf irai irar iri- iria irra irri irta irtf irti itaa itaf itai itar itat itfa itia itif itra itrf itri itta ittf raab raaf raat raba rabb rabi rafa raff rafi raft raia raif raii rair rait rara rarb rarf rari rata ratf rati ratt rbaf rbbb rbbr riaa riab riai riat rib- riba rifa riff rift riia riif riri rita riti ritt rrat rrif rrrr rtai rtbf rtfb taa- taaf taar taat taba tabb tabi tafa taff tafi taft taia tair tait tara tarb tarf tari tarr tart tata tatb tati tatr tatt tbaf tbar tbit tbrb tbta tiaa tiab tiaf tiar tiba tibi tifa tiff tift tiit tira tirb tiri tirr tita titi titt traa trab traf trai trat trfr tri- tria trib trif trit trra trtr ttab ttbb ttfa ttff tttt