a-ii aaaa aaai aaar aaas aaii aais aaoo aara aari aaro aars aart aasa aasi aass aast aata aatt aiai aias aiia aiir aioi aira airi airo airs airt aisa aisi aiso aisr aist aita aiti aitr aits aitt aora aors aort aoss arai arar aras arat aria arii ario aris arit aroa aroi aroo aror aros arr- arra arri arro arrr arrs arrt ars- arsa arsi arso arst arta arti arto artr arts asaa asai asao asar asas asat asia asii asio asir asis asit asoi asor asos asot asra asro asrs assa assi asso assr asss asst asta asti asto astr asts at-t ataa atai atar atas atat atia atis atit atoi ator atos atot atra atri atro atsi atst atta atti atto attr atts iaaa iaai iaas iaat iaia iais iara iars iart iasa iasi iaso iasr iata iati iias iiii iiio iiis iiit iioi iioo iios iira iirs iisi iisr iist iita iitr iitt ioii ioio ioit iooi iooo ioos iora iori iors ioso iota ioto irai irao irar iras iri- iria irio iris irra irri irrs irsa irta irti irts is-a isai isao isar isas isat isia isis isit iso- isor isos isra isri issa issi isso issr isss ista isti isto istr ists itaa itai itar itas itat itia itis itoi itoo itor itos itra itri itrs itsa itsi itso itta itto oais oara oars oasi oass oast oats oiii oios oira oirt oist oita oiti ooaa ooia oooo ooos oora oort oosa oosi oost oots orai orao orar oras orat ori- oria orio oris orit oro- oror oros orot orra orri orro orrs orsa orsi orso orta orto orts osai osar osas osat osia osii osis osoi osoo osor osos osro ossa ossi osso osta osti ostr osts otar otas otis otit oto- otoo otor otos otra otro otrs otsa otso otta otti otto otts raas raat raia raii rair rais rait raos rara rari raro rars rasa rasi raso rass rast rata rati rato rats ratt riaa riai rias riat riia riis rios riot riri rirs risa risi riso riss rist rita riti rito rits ritt roar roas roat roia roio roir rois roit rooi roor roos root rora rori roro rort rosa rosi roso ross rost rota roti roto rotr rots rott rras rrat rrrr rsaa rsai rsis rsos rssa rsts rtai rtas rtss rtts s-ii s-os saar saas saat saia sair sais sait saoi saor saos sara sari saro sarr sars sart sasa sasi saso sass sast sata sati sato satr sats satt siaa siai sias siat siit sior sios siot sira siri siro sirr sirs sirt sisa sisi siss sist sit- sita siti sito sits sitt soar soas soat soia soir sois soit soor soos soot sora sori soro sorr sors sort sosa sosi soso soss sost sota soto sots sras sris sros srta srtr ssaa ssao ssas ssat ssis ssit ssot ssra ssri ssrs sssa sssi ssss ssta ssts stai star stas stat stia stio stir stis stit stoa stoo stor stos stot stra stri stro strs stsi stss sttr taa- taar taas taat taia taio tair tais tait taoa taor taos tara tari taro tarr tars tart tasa tasi tasr tass tast tata tati tato tatr tats tatt tiaa tiao tiar tias tiit tios tira tiri tiro tirr tirs tisa tisi tiso tiss tist tita titi tito tits titt toas toat tois toit tooa toor toos toot tora tori toro torr tors tort tosa tosi toso toss tost tota toti toto totr tots tott traa trai trao tras trat tri- tria trio tris trit troa troi troo tros trot trra trsi trst trtr tsaa tsai tsao tsar tsat tsia tsis tsoi tsos tssa tssi tssr tsst tsts ttss tttt