a-ii aaaa aaab aaaf aaai aaar aaas aaba aabb aabi aafa aafb aaff aafi aaib aaii aais aara aari aars aasa aasf aasi aass abaa abab abaf abai abar abas abb- abba abbb abbi abbr abbs abff abia abib abir abis abra abri abrs abs- absa absf absi abss afaa afar afbs affa affi affs afia afib afif afir afis afr- afra afri afrs afsa afsb aiai aias aiba aiff aifs aiia aiib aiir aira airi airs aisa aisb aisi aisr arab araf arai arar aras arba arbi arbs arfa arfb arff arfs aria arib arif arii aris arr- arra arri arrr arrs ars- arsa arsi asaa asab asaf asai asar asas asba asfa asfi asia asif asii asir asis asra asrs assa assi assr asss ba-i baaa baaf baar baas baba babb babi babr babs baff baia baib bair bais bar- bara barb barf bari barr bars basa basf basi bass bbas bbbb bbbs bfas bffs bfsi bfsr biaf biar bias biba bibb bibi bibs bifa biff bifi biis bira birb biri birr birs bis- bisa biss brab braf brai bras bria bris brrr brrs brsb brsr bsaa bsas bsfa bsff bsfs bsra faaa faas faba fabi fabs fafa faff fafi fair fais fara farb farr fars fasa fasi fass fbar fbis fbrs ffar ffff ffii ffrr ffsa ffss fiaa fiaf fiar fias fiba fibs fifa fiff fifi fiii fira firs fisa fisi fiss frab fras fria frib fris frsb fsai fsas fsfi fsia fsra fssa fssf iaaa iaai iaas iaba iaff iaia iais iara iars iasa iasi iasr ibar ibas ibfi ibia ibis ibra ibri ibsa ibsf ibss ifaa ifar ifas ifbb ifis ifra ifrb ifrf ifri ifsa ifsb iias iifa iiii iiis iira iirs iisi iisr iraf irai irar iras iri- iria iris irra irri irrs irsa irsf is-a isaf isai isar isas isba isfa isia isis isra isri issa issf issi issr isss raab raaf raas raba rabb rabi rabs rafa raff rafi raia raif raii rair rais rara rarb rarf rari rars rasa rasi rass rbaf rbbb rbbr rbbs rbis rbss riaa riab riai rias rib- riba ribs rifa riff rifs riia riif riis riri rirs risa risi riss rras rrif rrrr rsaa rsaf rsai rsbi rsis rssa s-ib s-ii saab saaf saar saas saba sabb sabi sabr sabs safa safb saff safi safr saia saif sair sais sara sarf sari sarr sars sasa sasf sasi sass sbaa sbai sbar sbas sbbs sbia sbsa sbsi sfar sfas sfba sfia sfra sfss siaa siab siaf siai sias siba sibi sibs sifa siff sifr sira sirf siri sirr sirs sisa sisi siss sraf sras srfi srib sris ssaa ssab ssas ssbr ssis ssra ssri ssrs sssa sssb sssf sssi ssss