a-ii aaaa aaai aaar aaas aaii aais aaoo aara aari aaro aars aasa aasi aass aiai aias aiia aiir aioi aira airi airo airs aisa aisi aiso aisr aora aors aoss arai arar aras aria arii ario aris aroa aroi aroo aror aros arr- arra arri arro arrr arrs ars- arsa arsi arso asaa asai asao asar asas asia asii asio asir asis asoi asor asos asra asro asrs assa assi asso assr asss iaaa iaai iaas iaia iais iara iars iasa iasi iaso iasr iias iiii iiio iiis iioi iioo iios iira iirs iisi iisr ioii ioio iooi iooo ioos iora iori iors ioso irai irao irar iras iri- iria irio iris irra irri irrs irsa is-a isai isao isar isas isia isis iso- isor isos isra isri issa issi isso issr isss oais oara oars oasi oass oiii oios oira ooaa ooia oooo ooos oora oosa oosi orai orao orar oras ori- oria orio oris oro- oror oros orra orri orro orrs orsa orsi orso osai osar osas osia osii osis osoi osoo osor osos osro ossa ossi osso raas raia raii rair rais raos rara rari raro rars rasa rasi raso rass riaa riai rias riia riis rios riri rirs risa risi riso riss roar roas roia roio roir rois rooi roor roos rora rori roro rosa rosi roso ross rras rrrr rsaa rsai rsis rsos rssa s-ii s-os saar saas saia sair sais saoi saor saos sara sari saro sarr sars sasa sasi saso sass siaa siai sias sior sios sira siri siro sirr sirs sisa sisi siss soar soas soia soir sois soor soos sora sori soro sorr sors sosa sosi soso soss sras sris sros ssaa ssao ssas ssis ssra ssri ssrs sssa sssi ssss