a-a a-b a-t aaa aab aao aar aat aau aav ab- aba abb abo abr abt abu abv aoa aob aoo aor aot aou aov ar- ara arb aro arr art aru arv at- ata atb ato atr att atu atv au- aua aub auo aur aut auv av- ava avb avo avr avt avu b-u baa bab bao bar bat bau bav bba bbb bbo bbr bbt bbu boa bob boo bor bot bou bov bra brb bro brr brt bru brv bta btb bto btr btt btu btv bua bub buo bur but buu bva bvb bvo bvr bvt bvu bvv oaa oab oao oar oat oau oav ob- oba obb obo obr obt obu obv oo- ooa oob ooo oor oot oov or- ora orb oro orr ort oru orv ot- ota otb oto otr ott otu otv ou- oua ouo our out ov- ova ovb ovo ovv ra- raa rab rao rar rat rau rav rba rbb rbo rbr rbt rbu roa rob roo ror rot rou rov rra rrb rrr rrt rru rta rtb rto rtr rtt rtu rtv rua rub ruo rur rut ruu ruv rva rvb rvo rvr rvt rvu rvv taa tab tao tar tat tau tav tba tbb tbo tbr tbt tbu tbv to- toa tob too tor tot tou tov tra trb tro trr trt tru trv tta ttb tto ttr ttt ttu ttv tua tub tuo tur tut tuu tuv tva tvb tvo tvr tvt tvu ua- uaa uab uao uar uat uau uav uba ubb ubo ubr ubt ubu ubv uoa uob uoo uor uot ur- ura urb uro urr urt uru uta utb uto utr utt utu utv uua uur uut uuu uva uvb uvo uvu uvv v-a vaa vab vao var vat vau vav vba vbo vbr vbv voa vob voo vor vot vou vov vra vrb vrr vrt vru vta vtb vto vtr vtt vtu vtv vur vut vuv vva vvb vvo vvr vvt vvv

aaaa aaab aaar aaav aaba aabb aabt aaoo aara aaro aart aaru aata aatt aava abaa abab abar abat abau abb- abba abbb abbo abbr abbt aboa abob aboo abor abot abou abov abra abro abta abtu abua abut abva aoba aora aorb aort aout arab arar arat arau arba aroa arob aroo aror arr- arra arro arrr arrt arru arta arto artr artv arua arub arut arva arvo at-t ataa atab atar atat atob ator atot atra atro atru atta atto attr attu atua atub atur auaa aur- aura auro aut- auto avab avao avar avat avor avot avou avra avro avur avva avvo baaa baar baat baba babb babo babr babu bar- bara barb baro barr bart baru bata bato batt batu bau- baur bava bavu bbau bbbb boab boar boat boba bobb bobo bobu boob boor boot bor- bora boro borr bort boru bota botb boto bott boua bour bout bova bovo brab brao brat brau brav broa brob broo bror brot brou brrr brut bruv btaa btob btor btrt bttb buar buat buba bubb bubo bubu bur- bura burb buro burr burt buru but- buta buto butt oaau oara obba obbo obor obot obra obro ooaa ooba oooo oora oort ootb orab orao orar orat orav orba orbb orbo orbu oro- oror orot orra orro orta orto orub orvr otar oto- otoo otor otov otra otro otta otto ottu otur ouat our- oura ouro ourt out- outa outb outo ouu- ovar ovo- ovoo ovot ovra raab raat raba rabb rabo rabu raob rara rarb raro rata rato ratt ratu raua raub raut rava rbbb rbbr roab roar roat rob- roba robb robo robt robu roob roor root rora roro rort roru rota roto rotr rott roua roub rout rova rovo rrat rrrr rtva ruba rubb rubu rura ruro ruru ruta ruto rutt rutu ruvu taa- taar taat taba tabb tabo tabu taoa taor taou tara tarb taro tarr tart taru tata tatb tato tatr tatt tatu tatv taua taub taur taut tava tavo tbar tbrb tbta toab toat toau toba tobo tobt tobu tooa toor toot tora toro torr tort toru torv tota toto totr tott tour tout touv tova tovo traa trab trao trat trau trav troa troo trot trou trra trtr trub trut truu ttab ttbb tttt tuao tuar tuat tuba tubb tubo tubr tubu tuor tura turb turo turr turt turu tuta tuto tutt tutu tuuo tuva tvro tvrr tvtv uart uaru uata uatu uatv uaua ubar ubba ubbo ubra uor- uovo urao urat urau urba uro- uroa uroo urra urur urut urva utau utor utto uttu uuta uuuu uv-a uv-b uvaa uvat uvvu vaar vaat vara varr vart varu vata vato vatt vatu vaut vava voar voat voor voot vor- vora voro vort voru vota voto vour vout vrav vrba vrot vrto vurb vurt vutv vvob vvvv

-aaa- aaata aabaa aabba aabra aarau abaab ababa ababu abara abaru abava abbar abbat abbot abbou abbur aboab aboat abobo aboot abora abort abott about abovo abrar abtaa abtao abtar abura aburr abuta abutt aort- aorta aotuv ar-ab araat arab- araba arabo arara araru arata arava aravu arbab arbar arbat arbor arbot aroab aroar aroba aroor aroot arora arout arrau arrou arrua artar artat arto- artoo artot artou artur aruaa aruba arura aruru aruta aruvu arvar atabu atara ataru atbar atbat atoot atora atoto atour atout atrab atro- atroa atrot attar atto- attra attur atura atvr aurar aurat auro- auroa auror aurra aurva auto- autor avara avaro avato avour avouu baart baata baava babar babau baboo babot babou babra babur babut baoro baraa barab barao barar barat barba barbu baro- baroa baroo baror barot barra barro barru barta barto barua barut barva batab batar batat batau batob batoo bator batou batov batra batta batto battu batuo batur baubo baura bauru bauta bavar bavra bbart bo-bo boaro boart bobar bobov bobr booat booba boora boort booru boota borat borau borba borbo boro- boroa boroo borot borou borov borra borro borut borvo botar botou botro botta bottu