a-a a-b a-i a-t aaa aab aai aao aar aat aau ab- aba abb abi abo abr abt abu ai- aia aib aii aio air ait aiu aoa aob aoi aoo aor aot aou ar- ara arb ari aro arr art aru at- ata atb ati ato atr att atu au- aua aub aui auo aur aut b-u baa bab bai bao bar bat bau bba bbb bbi bbo bbr bbt bbu bi- bia bib bii bio bir bit biu boa bob boi boo bor bot bou bra brb bri bro brr brt bru bta btb bti bto btr btt btu bua bub bui buo bur but buu ia- iaa iab iai iao iar iat iau iba ibb ibi ibo ibr ibt ibu iia iib iii iio iir iit iiu io- ioa iob ioi ioo ior iot iou ir- ira irb iri iro irr irt iru ita itb iti ito itt itu iu- iua iub iui iur iut o-i oaa oab oai oao oar oat oau ob- oba obb obi obo obr obt obu oia oib oii oio oir oit oiu oo- ooa oob ooi ooo oor oot or- ora orb ori oro orr ort oru ot- ota otb oti oto otr ott otu ou- oua oui ouo our out ra- raa rab rai rao rar rat rau rba rbb rbi rbo rbr rbt rbu ria rib rii rio rir rit roa rob roi roo ror rot rou rra rrb rri rrr rrt rru rta rtb rti rto rtr rtt rtu rua rub rui ruo rur rut ruu taa tab tai tao tar tat tau tba tbb tbi tbo tbr tbt tbu tia tib tii tio tir tit tiu to- toa tob toi too tor tot tou tra trb tri tro trr trt tru tta ttb tti tto ttr ttt ttu tua tub tui tuo tur tut tuu ua- uaa uab uai uao uar uat uau uba ubb ubi ubo ubr ubt ubu uia uib uii uio uir uit uiu uoa uob uoo uor uot ur- ura urb uri uro urr urt uru uta utb uti uto utr utt utu uua uur uut uuu

a-ii aaaa aaab aaai aaar aaba aabb aabi aabt aaib aaii aaoo aara aari aaro aart aaru aata aatt abaa abab abai abar abat abau abb- abba abbb abbi abbo abbr abbt abia abib abir abit abiu aboa abob aboo abor abot abou abra abri abro abta abtu abua abut aiai aiba aibo aiia aiib aiir aioi aira airi airo airt aita aiti aitr aitt aitu aiui aoba aora aorb aort aout arab arai arar arat arau arba arbi aria arib arii ario arit aroa arob aroi aroo aror arr- arra arri arro arrr arrt arru arta arti arto artr arua arub arui arut at-t ataa atab atai atar atat atia atit atiu atob atoi ator atot atra atri atro atru atta atti atto 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 bar- bara barb bari baro barr bart baru bata bati bato batt batu bau- baur bbau bbbb biao biar biat biba bibb bibi bibo bio- bioi biot biou 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 boor boot bor- bora bori boro borr bort boru bota botb boti boto bott boua bour bout brab brai brao brat brau bria brio brit broa brob broo bror brot brou brrr brut btaa btob btor btrt bttb buar buat buba bubb bubi bubo bubu buir buit buiu bur- bura burb buri buro burr burt buru but- buta buti buto butt iaaa iaai iaat iaba iaia iara iart iaru iata iati ibar ibat ibia ibot ibra ibri ibro ibtb iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi ioii ioio ioit iooi iooo iora iori iota ioto irai irao irar iri- iria irio irob irra irri irta irti itaa itai itar itat itia itoi itoo itor itou itra itri itta itto itur iuiu iura oaau 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 orab orai orao orar orat orba orbb orbi orbo orbu ori- oria orio orit oro- oror orot orra orri orro orta orto orub otar otit oto- otoo otor otra otro otta otti otto ottu otur ouat ouii ouir ouit our- oura ouro ourt out- outa outb outi outo ouu- raab raat raba rabb rabi rabo rabu raia raii rair rait raiu raob rara rarb rari raro rata rati rato ratt ratu raua raub raut rbbb rbbr riaa riab riai riat riau rib- riba ribo ribu riia riot riou riri rita riti rito ritt ritu roab roar roat rob- roba robb robi robo robt robu roia roio roir roit roiu roob rooi roor root rora rori roro rort roru rota roti roto rotr rott roua roub rout rrat rrrr rtai ruba rubb rubi rubu ruit rura ruri ruro ruru ruta ruti ruto rutt rutu taa- taar taat taba tabb tabi tabo tabu taia taio tair tait taoa taor taou tara tarb tari taro tarr tart taru tata tatb tati tato tatr tatt tatu taua taub taur taut tbar tbit tbrb tbta tiaa tiab tiao tiar tiba tibi tibu tiit tiiu tiou tira tirb tiri tiro tirr tiru tita titi tito titt titu toab toat toau toba tobi tobo tobt tobu toit tooa toor toot tora tori toro torr tort toru tota toti toto totr tott toui tour tout traa trab trai trao trat trau tri- tria trib trio trit troa troi troo trot trou trra trtr trub trut truu ttab ttbb tttt tuao tuar tuat tuba tubb tubo tubr tubu tuit tuiu tuor tura turb turi turo turr turt turu tuta tuti tuto tutt tutu tuuo uair uart uaru uata uatu uaua ubar ubba ubbi ubbo ubii ubir ubit ubra