a-ii a-iv aaaa aaai aaar aaas aaav aaii aais aara aari aars aart aasa aasi aass aast aata aatt aava aiai aias aiia aiir aira airi airs airt airx aisa aisi aisr aist aita aiti aitr aits aitt aiva aixa aixi arai arar aras arat arax aria arii aris arit arr- arra arri arrr arrs arrt ars- arsa arsi arst arta arti artr arts artv artx arva arvi asaa asai asar asas asat asia asii asir asis asit asix asra asrs assa assi assr asss asst asta asti astr asts astv asva asvs at-t at-x ataa atai atar atas atat atax atia atis atit atra atri atrx atsi atst atta atti attr atts atvi atvs avar avas avat avax avia avis avit aviv avra avri avst avva axar axat axi- axia axis iaaa iaai iaas iaat iaia iais iara iars iart iasa iasi iasr iata iati iava iias iiii iiis iiit iira iirs iisi iisr iist iita iitr iitt irai irar iras iri- iria iris irix irra irri irrs irsa irta irti irts irvs is-a isai isar isas isat isia isis isit isra isri issa issi issr isss ista isti istr ists itaa itai itar itas itat itia itis itra itri itrs itsa itsi itta ivai ivar ivrs ixia ixxi raas raat raia raii rair rais rait raix rara rari rars rasa rasi rass rast rata rati rats ratt rava ravi raxa raxi riaa riai rias riat riia riis riri rirs risa risi riss rist rita riti rits ritt riva rivs rras rrat rrrr rsaa rsai rsis rssa rsts rtai rtas rtss rtts rtva rtvi rxvt s-ii s-iv s-vt sa-x saar saas saat saia sair sais sait saiv saix sara sari sarr sars sart sarv sasa sasi sass sast sata sati satr sats satt sava savi savs saxa saxi saxt siaa siai sias siat siit sira siri sirr sirs sirt sisa sisi siss sist sit- sita siti sits sitt siva sivi sixa sixt sixx sras sris srta srtr srtv ssaa ssas ssat ssis ssit ssra ssri ssrs sssa sssi ssss ssta ssts st-v stai star stas stat stax stia stir stis stit stix stra stri strs stsi stss sttr stvs svar svir svit svtr taa- taar taas taat taia tair tais tait taix tara tari tarr tars tart tasa tasi tasr tass tast tata tati tatr tats tatt tatv tava tavi tavs tax- taxa taxi taxt tiaa tiar tias tiax tiit tira tiri tirr tirs tisa tisi tiss tist tita titi tits titt tiva tivi tixt traa trai tras trat trav trax tri- tria tris trit trix trra trsi trst trtr trvs tsaa tsai tsar tsat tsav tsia tsis tsiv tsix tssa tssi tssr tsst tsts tsvi ttss tttt tvis tvri tvrr tvsa tvss tvtv txaa txii txtr vaar vaas vaat vaia vair vais vait vara vari varr vars vart vas- vasa vasi vass vast vata vati vats vatt vava vavs vaxi viar vias viii vira viri virr virt visa visi viss vist vita viti vitt viva vivi vixx vrai vras vrav vria vris vrsa vrsi vrtx vsix vsta vt-i vt-x vtrs vvvv xaar xait xara xats xavi xiii xisi xist xita xixi xrvs xtar xtra xtsr xvii xxii xxiv xxix xxvi xxxi xxxv xxxx