a-a a-b a-t aaa aab aaf aan aao aar aat ab- aba abb abf abn abo abr abt af- afa afb aff afn afo afr aft an- ana anb anf ann ano anr ant aoa aob aof aon aoo aor aot ar- ara arb arf arn aro arr art at- ata atb atf atn ato atr att baa bab baf ban bao bar bat bba bbb bbf bbn bbo bbr bbt bfa bfb bff bfn bfo bfr bft bna bnb bnf bnn bno bnr bnt boa bob bof bon boo bor bot bra brb brf brn bro brr brt bta btb btf btn bto btr btt faa fab faf fan fao far fat fba fbb fbf fbn fbo fbr fbt ffa fff ffn ffo ffr fft fna fnb fnf fnn fnr fnt foa fob fof fon foo for fot fra frb frf frn fro frr frt fta ftb ftf ftn fto ftr ftt naa nab naf nan nao nar nat nba nbb nbf nbn nbo nbr nbt nfa nfb nff nfn nfo nfr nft nna nnb nnf nnn nno nnt no- noa nob nof non noo nor not nra nrb nrf nrn nro nrr nrt nta ntb ntf ntn nto ntr ntt oaa oab oaf oan oao oar oat ob- oba obb obf obn obo obr obt of- ofa ofb off ofn ofo ofr oft on- ona onb onf onn ono onr ont oo- ooa oob oof oon ooo oor oot or- ora orb orf orn oro orr ort ot- ota otb otf otn oto otr ott ra- raa rab raf ran rao rar rat rba rbb rbf rbn rbo rbr rbt rfa rfb rff rfn rfo rfr rft rna rnb rnn rno rnr rnt roa rob rof ron roo ror rot rra rrb rrf rrn rrr rrt rta rtb rtf rtn rto rtr rtt taa tab taf tan tao tar tat tba tbb tbf tbn tbo tbr tbt tfa tfb tff tfn tfo tfr tft tna tnb tnf tnn tno tnr tnt to- toa tob tof ton too tor tot tra trb trf trn tro trr trt tta ttb ttf ttn tto ttr ttt

-ana aaaa aaab aaaf aaan aaar aaba aabb aabt aafa aafb aaff aana aaon aaoo aara aaro aart aata aatf aatt abaa abab abaf aban abar abat abb- abba abbb abbo abbr abbt abff aboa abob abof abon aboo abor abot abra abro abta afaa afan afao afar afat affa affo afft afoa afoo afor afr- afra afro afta aftn ana- anaa anab anan anao anar anat anba anbb anbo anfa anfo anna annb anno annt ano- anoa anon anor ant- anta anto antr antt aoba aonb aono aont aora aorb aorn aort aotf arab araf aran arar arat arba arfa arfb arff arft arna arno arnt aroa arob aron aroo aror arr- arra arro arrr arrt arta arto artr at-t ataa atab atan atar atat atfb atna atno atob atof aton ator atot atra atrn atro atta attn atto attr baaa baaf baan baar baat baba babb babo babr baff bafo baft bana bann bano banr bant baon bar- bara barb barf barn baro barr bart bata batf batn bato batt bbbb bbfn bfta bftt bnor bnrr bnta boab boan boar boat boba bobb bobo bofa boff bona bonn bono bont boob boof boon boor boot bor- bora borf born boro borr bort bota botb botn boto bott brab braf bran brao brat brna brno broa brob bron broo bror brot brrr btaa btaf btan btob btor btrt bttb faaa faan faba fabo fafa faff fafo fana fano fant faon fara farb faro farr fart fata fatf fato fatt fbar ffar ffff ffrr fftf fnar fnta fntb foaf foan foar foba fobt fofo fono font foof foon foot for- fora forb forn foro forr fort fota foto fott frab fran frat frob fron frot frta ftan naaa naab naan naar naat naba nabf nabo nafa naff nafo nan- nana nanb nann nano nant naor naot nara narf narn naro narr nart nata nato natt nbaa nbaf nbar nbbo nbfa nfaa nfat nfff nfon nfra nfta nfto nnnn nnot nntn noaa noat noba nobo non- nona nonn nono nont noo- noob noon nooo noor noot nor- nora norb norf norn noro norr nort not- nota noto nott nrab nrna nron nrta ntof ntto nttr oafo oara oban obba obbo obon obor obot obra obro ofan off- offa offo offr ofna ofno ofor ofra ofta onab onan onar onat onna onno onon onor onra ont- onto ooaa ooba ooff oona oont oooo oora oort ootb orab oran orao orar orat orba orbb orbo orff orna orno oro- orof oron oror orot orra orro orta orto otan otar oto- otof oton otoo otor otra otro otta otto raab raaf raan raat raba rabb rabo rafa raff raft rana rann rano rant raob rara rarb rarf raro rata ratf rato ratt rbaf rbbb rbbr rnaf rnbr rnnt rnot roab roaf roan roar roat rob- roba robb robo robt roff rofo rona rono ront roob roof roon roor root rora roro rort rota rotn roto rotr rott rrat rrna rrrr rtan rtbf rtfb taa- taaf taan taar taat taba tabb tabo tafa taff tafo taft tana tann tano tant taoa taor tara tarb tarf tarn taro tarr tart tata tatb tato tatr tatt tbaf tbar tbnf tbrb tbta tfot toab toan toat toba tobo tobt tofa toff tofo toft tona tonb tonn tono tooa toof toon toor toot tora torf torn toro torr tort tota toto totr tott traa trab traf tran trao trat trfr trna trno troa tron troo trot trra trtr ttab ttbb ttfa ttff ttfn tton tttt

-aaa- aaata aabaa aabba aabra aafat aanat aarna aaron abaab ababa abaft abana abann abano abaon abara abarn abban abbar abbat abbot abfab aboab aboat abobo abona abono aboon aboot abora aborn abort abott abran abrar abron abtaa abtaf abtao abtar afara affor afnan afnor afono afoot afro- afrob aftab aftar afton aftra anaba anana anant anara anart anata