a-ii aaaa aaab aaai aaar aaas aaba aabb aabi aaib aaii aais aara aari aars aasa aasi aass abaa abab abai abar abas abb- abba abbb abbi abbr abbs abia abib abir abis abra abri abrs abs- absa absi abss aiai aias aiba aiia aiib aiir aira airi airs aisa aisb aisi aisr arab arai arar aras arba arbi arbs aria arib arii aris arr- arra arri arrr arrs ars- arsa arsi asaa asab asai asar asas asba asia asii asir asis asra asrs assa assi assr asss ba-i baaa baar baas baba babb babi babr babs baia baib bair bais bar- bara barb bari barr bars basa basi bass bbas bbbb bbbs biar bias biba bibb bibi bibs biis bira birb biri birr birs bis- bisa biss brab brai bras bria bris brrr brrs brsb brsr bsaa bsas bsra iaaa iaai iaas iaba iaia iais iara iars iasa iasi iasr ibar ibas ibia ibis ibra ibri ibsa ibss iias iiii iiis iira iirs iisi iisr irai irar iras iri- iria iris irra irri irrs irsa is-a isai isar isas isba isia isis isra isri issa issi issr isss raab raas raba rabb rabi rabs raia raii rair rais rara rarb rari rars rasa rasi rass rbbb rbbr rbbs rbis rbss riaa riab riai rias rib- riba ribs riia riis riri rirs risa risi riss rras rrrr rsaa rsai rsbi rsis rssa s-ib s-ii saab saar saas saba sabb sabi sabr sabs saia sair sais sara sari sarr sars sasa sasi sass sbaa sbai sbar sbas sbbs sbia sbsa sbsi siaa siab siai sias siba sibi sibs sira siri sirr sirs sisa sisi siss sras srib sris ssaa ssab ssas ssbr ssis ssra ssri ssrs sssa sssb sssi ssss