a-a a-b a-t aaa aab aan aao aar aat aau ab- aba abb abn abo abr abt abu an- ana anb ann ano anr ant anu aoa aob aon aoo aor aot aou ar- ara arb arn aro arr art aru at- ata atb atn ato atr att atu au- aua aub aun auo aur aut b-u baa bab ban bao bar bat bau bba bbb bbn bbo bbr bbt bbu bna bnb bnn bno bnr bnt bnu boa bob bon boo bor bot bou bra brb brn bro brr brt bru bta btb btn bto btr btt btu bua bub bun buo bur but buu naa nab nan nao nar nat nau nba nbb nbn nbo nbr nbt nbu nna nnb nnn nno nnt nnu no- noa nob non noo nor not nou nra nrb nrn nro nrr nrt nru nta ntb ntn nto ntr ntt ntu nua nub nun nuo nur nut nuu oaa oab oan oao oar oat oau ob- oba obb obn obo obr obt obu on- ona onb onn ono onr ont onu oo- ooa oob oon ooo oor oot or- ora orb orn oro orr ort oru ot- ota otb otn oto otr ott otu ou- oua oun ouo our out ra- raa rab ran rao rar rat rau rba rbb rbn rbo rbr rbt rbu rna rnb rnn rno rnr rnt rnu roa rob ron roo ror rot rou rra rrb rrn rrr rrt rru rta rtb rtn rto rtr rtt rtu rua rub run ruo rur rut ruu taa tab tan tao tar tat tau tba tbb tbn tbo tbr tbt tbu tna tnb tnn tno tnr tnt to- toa tob ton too tor tot tou tra trb trn tro trr trt tru tta ttb ttn tto ttr ttt ttu tua tub tun tuo tur tut tuu ua- uaa uab uan uao uar uat uau uba ubb ubn ubo ubr ubt ubu un- una unb unn uno unr unt unu uoa uob uon uoo uor uot ur- ura urb urn uro urr urt uru uta utb utn uto utr utt utu uua uun uur uut uuu

-ana a-un aaaa aaab aaan aaar aaba aabb aabt aana aaon aaoo aara aaro aart aaru aata aatt abaa abab aban abar abat abau abb- abba abbb abbo abbr abbt abnu aboa abob abon aboo abor abot abou abra abro abta abtu abua abun abut ana- anaa anab anan anao anar anat anau anba anbb anbo anbu anna annb anno annt ano- anoa anon anor ant- anta anto antr antt antu anua anub anun anut aoba aonb aono aont aora aorb aorn aort aoun aout arab aran arar arat arau arba arna arno arnt aroa arob aron aroo aror arr- arra arro arrr arrt arru arta arto artr arua arub arun arut at-t ataa atab atan atar atat atna atno atob aton ator atot atra atrn atro atru atta attn atto attr attu atua atub atun atur auaa auna aunt aur- aura auro aut- auto baaa baan baar baat baba babb babo babr babu bana bann bano banr bant banu baon bar- bara barb barn baro barr bart baru bata batn bato batt batu bau- baur bbau bbbb bnor bnrr bnta boab boan boar boat boba bobb bobo bobu bona bonn bono bont bonu boob boon boor boot bor- bora born boro borr bort boru bota botb botn boto bott boua boun bour bout brab bran brao brat brau brna brno broa brob bron broo bror brot brou brrr brun brut btaa btan btob btor btrt bttb buar buat buba bubb bubo bubu buna bunb bunn buno bunt bunu buon bur- bura burb burn buro burr burt buru but- buta buto butt naaa naab naan naar naat naba nabo nabu nan- nana nanb nann nano nant nanu naor naot nara narn naro narr nart naru nata nato natt natu nauo naur naut nbaa nbar nbbo nnnn nnot nntn noaa noat noba nobo nobu non- nona nonn nono nont nonu noo- noob noon nooo noor noot nor- nora norb norn noro norr nort not- nota noto nott noun nour nout nrab nrna nron nrta ntnu ntru ntto nttr nuan nuba nuna nunn nuno nunt nuon nura nurn nurr nurt nuru nutt nutu oaau oara oban obba obbo obon obor obot obra obro onab onan onar onat onna onno onon onor onra ont- onto onur onut ooaa ooba oona oont oooo oora oort ootb orab oran orao orar orat orba orbb orbo orbu orna orno oro- oron oror orot orra orro orta orto orub otan otar oto- oton otoo otor otra otro otta otto ottu otur ouan ouat oun- ouna our- oura ourn ouro ourt out- outa outb outo ouu- raab raan raat raba rabb rabo rabu rana rann rano rant raob rara rarb raro rata rato ratt ratu raua raub raun raut rbbb rbbr rnbr rnnt rnot rnut roab roan roar roat rob- roba robb robo robt robu rona rono ront roob roon roor root rora roro rort roru rota rotn roto rotr rott roua roub roun rout rrat rrna rrrr rrun rtan ruan ruba rubb rubu runa runn runo runt rura ruro ruru ruta ruto rutt rutu ruun taa- taan taar taat taba tabb tabo tabu tana tann tano tant tanu taoa taor taou tara tarb tarn taro tarr tart taru tata tatb tato tatr tatt tatu taua taub taur taut tbar tbrb tbta tnut toab toan toat toau toba tobo tobt tobu tona tonb tonn tono tonu tooa toon toor toot tora torn toro torr tort toru tota toto totr tott toun tour tout traa trab tran trao trat trau trna trno troa tron troo trot trou trra trtr trub trun trut truu ttab ttbb tton tttt tuan tuao tuar tuat tuba tubb tubo tubr tubu tuna tunb tunn tuno tunu tuor tura turb turn turo turr turt turu tuta tuto tutt tutu tuuo uart uaru uata uatu uaua ubar ubba ubbo ubon ubra unaa unan unar unat unau unna unno unon unra unro untb