a-ii a-iv aaaa aaab aaai aaar aaas aaav aaba aabb aabi aabt aaib aaii aais aaoo aara aari aaro aars aart aasa aasi aass aast aata aatt aava abaa abab abai abar abas abat abb- abba abbb abbi abbo abbr abbs abbt abia abib abir abis abit aboa abob aboo abor abos abot abov abra abri abro abrs abs- absa absi abss abta abts abva aiai aias aiba aibo aiia aiib aiir aioi aira airi airo airs airt aisa aisb aisi aiso aisr aist aita aiti aitr aits aitt aiva aoba aora aorb aors aort aoss arab arai arar aras arat arba arbi arbs aria arib arii ario aris arit aroa arob aroi aroo aror aros arr- arra arri arro arrr arrs arrt ars- arsa arsi arso arst arta arti arto artr arts artv arva arvi arvo asaa asab asai asao asar asas asat asba asbo asia asii asio asir asis asit asob asoi asor asos asot asra asro asrs assa assi asso assr asss asst asta astb asti asto astr asts astv asva asvs at-t ataa atab atai atar atas atat atbs atia atis atit atob atoi ator atos atot atra atri atro atsb atsi atst atta atti atto attr atts atvi atvs avab avao avar avas avat avia avio avis avit aviv avor avos avot avra avri avro avst avva avvo ba-i baaa baar baas baat baba babb babi babo babr babs baia baib baio bair bais bait baos bar- bara barb bari baro barr bars bart basa basi baso bass bast bata bati bato bats batt bava bavi bbas bbbb bbbs biao biar bias biat biba bibb bibi bibo bibs biis bio- bioi bios biot bira birb biri biro birr birs birt bis- bisa biso biss bist bita bito bits bitt bivi boab boai boar boas boat boba bobb bobi bobo bobs boi- boii bois boit boob boor boos boot bor- bora bori boro borr bors bort bosa bosi boso boss bost bota botb boti boto bots bott bova bovi bovo brab brai brao bras brat brav bria brio bris brit broa brob broo bror bros brot brrr brrs brsb brsr brst brvi bsaa bsas bsat bsos bsra bsts bstv btaa btob btor btrt btss bttb btvi iaaa iaai iaas iaat iaba iaia iais iara iars iart iasa iasi iaso iasr iata iati iava ibar ibas ibat ibia ibis ibos ibot ibra ibri ibro ibsa ibss ibtb ibts iias iiii iiio iiis iiit iioi iioo iios iira iirs iisi iisr iist iita iitr iitt ioba iobi ioii ioio ioit iooi iooo ioos iora iori iors ioso iota ioto irai irao irar iras iri- iria irio iris irob irov irra irri irrs irsa irta irti irts irvs is-a isai isao isar isas isat isba isbt isia isis isit iso- isor isos isra isri issa issi isso issr isss ista isti isto istr ists itaa itai itar itas itat itbs itia itis itoi itoo itor itos itra itri itrs itsa itsi itso itta itto ivai ivao ivar ivbv ivor ivrs oais oara oars oasi oass oast oats oavs obai obas obba obbo obia obis obit oboi obor obos obot obra obri obro obsr obss obst obts obvi obvs oiav oiba oiii oios oira oirt oist oita oiti ooaa ooba oobi ooia oooo ooos oora oort oosa oosi oost ootb oots orab orai orao orar oras orat orav orba orbb orbi orbo orbs ori- oria orio oris orit oro- oror oros orot orra orri orro orrs orsa orsi orso orta orto orts orvr orvs osai osar osas osat osba osia osii osis osoi osoo osor osos osov osro ossa ossb ossi osso osta osti ostr osts otar otas otbs otis otit oto- otoo otor otos otov otra otro otrs otsa otso otta otti otto otts ovar ovi- ovis ovo- ovoo ovot ovra raab raas raat raba rabb rabi rabo rabs raia raii rair rais rait raob raos rara rarb rari raro rars rasa rasi raso rass rast rata rati rato rats ratt rava ravi rbbb rbbr rbbs rbis rbss rbst riaa riab riai rias riat rib- riba ribo ribs riia riis rios riot riri rirs risa risi riso riss rist rita riti rito rits ritt riva rivo rivs roab roar roas roat rob- roba robb robi robo robs robt roia roio roir rois roit roob rooi roor roos root rora rori roro rort rosa rosi roso ross rost rota roti roto rotr rots rott rova rovi rovo rovs rras rrat rrrr rsaa rsai rsbi rsis rsos rssa rsts rtai rtas rtss rtts rtva rtvi s-ib s-ii s-iv s-os s-vt saab saar saas saat saba sabb sabi sabo sabr sabs saia sair sais sait saiv saoi saor saos sara sari saro sarr sars sart sarv sasa sasi saso sass sast sata satb sati sato satr sats satt sava savi savo savs sbaa sbai sbar sbas sbbs sbia sbor sbot sbsa sbsi sbst siaa siab siai sias siat siba sibi sibo sibs siit sior sios siot sira siri siro sirr sirs sirt sisa sisi siss sist sit- sita siti sito sits sitt siva sivi soar soas soat soba sobo sobr sobs sobt soia soir sois soit soor soos soot sora sorb sori soro sorr sors sort sosa sosi soso soss sost sosv sota soto sots sova sovo sovs sras srib sris sros srta srtr srtv ssaa ssab ssao ssas ssat ssbr ssis ssit ssot ssra ssri ssrs sssa sssb sssi ssss ssta sstb ssts st-v stab stai star stas stat stbs stia stib stio stir stis stit stoa stob stoo stor stos stot stra stri stro strs stsi stss sttr stvs svar svir svit svor svtr taa- taar taas taat taba tabb tabi tabo tabs taia taio tair tais tait taoa taor taos tara tarb tari taro tarr tars tart tasa tasb tasi tasr tass tast tata tatb tati tato tatr tats tatt tatv tava tavi tavo tavs tbar tbas tbbs tbit tbrb tbst tbta tbvi tiaa tiab tiao tiar tias tiba tibi tibs tiit tios tira tirb tiri tiro tirr tirs