a-ii aaaa aaab aaai aaap aaar aaba aabb aabi aabp aabt aaib aaii aaoo aapa aapi aapo aapt aara aari aaro aarp aart aaru aata aatt aaup abaa abab abai abap abar abat abau abb- abba abbb abbi abbo abbr abbt abia abib abir abit abiu aboa abob aboo abor abot abou abpa abpi abpp abpr abra abri abro abta abtu abua abut aiai aiba aibo aiia aiib aiir aioi aipa aipi aira airi airo airp airt aita aiti aitr aitt aitu aiui aoba aopo aora aorb aort aout apai apao apap apar apat apba apbr api- apia apio apip apit apo- apoo apop apor apot apou appa appr appt appu apra apri apro aprt apta apti aptt apua apup arab arai arap arar arat arau arba arbi aria arib arii ario arip arit aroa arob aroi aroo aror arpa arpi arpu arr- arra arri arro arrr arrt arru arta arti arto artr arua arub arui arup arut at-t ataa atab atai atap atar atat atia atip atit atiu atob atoi atop ator atot atpr atra atri atro atrp atru atta atti atto attp attr attu atua atub atur auaa aur- aura auri auro aut- auto ba-i baaa baar baat baba babb babi babo babr babu baia baib baio bair bait bapa bapi bapp bapt bapu bar- bara barb bari baro barr bart baru bata bati bato batt batu bau- baur bbau bbbb bbpr biao biap biar biat biba bibb bibi bibo bio- bioi biot biou bipa bipp bipu bira birb biri biro birr birt biru bita bito bitt bitu boab boai boar boat boba bobb bobi bobo bobu boi- boii boit boiu boob boop boor boot bopa bopp bor- bora bori boro borr bort boru bota botb boti boto bott boua boup bour bout bpai bpot bpti brab brai brao brat brau bria brio brit broa brob broo bror brot brou brrr brup brut btaa btbp btob btor btrt bttb buar buat buba bubb bubi bubo bubu buir buit buiu bupa bur- bura burb buri buro burp burr burt buru but- buta buti buto butt iaaa iaai iaap iaat iaba iaia iapa iapp iapt iapu iara iart iaru iata iati ibar ibat ibia ibot ibra ibri ibro ibtb iiii iiio iiit iioi iioo iiop iipa iira iita iitr iitt ioba iobi ioii ioio ioit iooi iooo iora iori iota ioto ipat ipba ipop ippa ippo ippr ipri ipta ipto ipur iput irai irao irap irar irbp iri- iria irio irip irob irop irpa irra irri irta irti irtp itaa itai itap itar itat itia itoi itoo itor itou itpa itra itri itta itto itup itur iuiu iupa iupp iura oaau oapi oara obai obba obbo obia obit oboi obor obot obra obri obro oiba oiii oira oirt oita oiti ooaa ooba oobi ooia oooo oora oort ootb ootp opap opar opia opii opio opit opo- opor oppa oppi oppo opra opti opto opua orab orai orao orar orat orba orbb orbi orbo orbu ori- oria orio orit oro- oror orot orpi orra orri orro orta orto orub orup otap otar otit oto- otoo otor otpp otra otro otta otti otto ottu otur ouat ouii ouir ouit oupa our- oura ouro ourt out- outa outb outi outo ouu- paap paar paat paba pabt pabu paia paib paio paip pair pait papa papb papi papp papr par- para pari paro parp parr part paru pata pati pato patr patt patu paua paup paur paut pbar pbpa piai piao piat piau pibb pibi piia piip piob piot pipa pipi pipo pipp pira piri piro pirr piru pita piti pito pitr pitt pitu poar poat poba pobo poia poio poop poor poot pop- popa popi popo popp popt pora porb pori poro porr port pota poti poto pott potu poui poup pour pout ppap ppar ppib ppoa pppa pppo pppp ppru ppta pptt ppur prai prao prar prat prau pri- pria prii pro- proa prob proo prop prot prou prri prti prtp prtr prut pruu ptab ptop ptui puao puar pubu puir puit puiu pupa pupi pupu pur- pura purb puri puro purp purr puru put- puta puti puto putt putu raab raat raba rabb rabi rabo rabu raia raii raip rair rait raiu raob raop rapa rapi rapp rapt rara rarb rari raro rata rati rato ratp ratt ratu raua raub raup raut rbbb rbbr riaa riab riai riat riau rib- riba ribo ribu riia riot riou ripa ripi ripp ripr ript riri rita riti rito ritt ritu roab roap roar roat rob- roba robb robi robo robt robu roia roio roir roit roiu roob rooi roop roor root ropa ropo rora rori roro rort roru rota roti roto rotr rott roua roub roup rout rpii rpob rpta rrat rrrr rtai rtpa rttp ruba rubb rubi rubp rubu ruit rupa rupp rupt rura ruri ruro rurp ruru ruta ruti ruto rutt rutu taa- taar taat taba tabb tabi tabo tabu taia taio taip tair tait taoa taor taou tapa tapi tapo tapp tapr tapt tapu tara tarb tari taro tarp tarr tart taru tata tatb tati tato tatr tatt tatu taua taub taur taut tbar tbit tbrb tbta tbtp tiaa tiab tiao tiar tiba tibi tibu tiit tiiu tiop tiou tip- tipa tipi tipo tipp tipt tipu tira tirb tiri tiro tirr tiru tita titi tito titp titt titu toab toat toau toba tobi tobo tobt tobu toit tooa toor toot top- topa topi topo topp topt topu tora tori toro torp torr tort toru tota toti toto totr tott toui toup tour tout tpap tpau tpia tpir tppa tppp tppr tptp tptr tput traa trab trai trao trap trat trau tri- tria trib trio trip trit troa troi troo trop trot trou trpa trpp trra trtr trub trut truu ttab ttbb ttop tttt tuao tuar tuat tuba tubb tubo tubr tubu tuit tuiu tuor tupa tupi tupo tupu tura turb turi turo turp turr turt turu tuta tuti tuto tutt tutu tuuo u-rp uair uart uaru uata uatu uaua ubar ubba