a-a a-b a-c a-t aaa aab aac aaf aan aao aat ab- aba abb abc abf abn abo abt ac- aca acb acc acf acn aco act af- afa afb afc aff afn afo aft an- ana anb anc anf ann ano ant aoa aob aoc aof aon aoo aot at- ata atb atc atf atn ato att baa bab bac baf ban bao bat bba bbb bbc bbf bbn bbo bbt bca bcb bcc bcf bcn bco bct bfa bfb bfc bff bfn bfo bft bna bnb bnc bnf bnn bno bnt boa bob boc bof bon boo bot bta btb btc btf btn bto btt c-- caa cab cac caf can cao cat cba cbb cbc cbf cbn cbo cbt cca ccb ccc ccf ccn cco cct cfa cfb cfc cff cfn cfo cft cn- cna cnb cnc cnf cnn cno cnt co- coa cob coc cof con coo cot cta ctb ctc ctf ctn cto ctt faa fab fac faf fan fao fat fba fbb fbc fbf fbn fbo fbt fca fcb fcc fcf fcn fco fct ffa ffc fff ffn ffo fft fna fnb fnc fnf fnn fnt foa fob foc fof fon foo fot fta ftb ftc ftf ftn fto ftt naa nab nac naf nan nao nat nba nbb nbc nbf nbn nbo nbt nca ncb ncc ncf ncn nco nct nfa nfb nfc nff nfn nfo nft nna nnb nnc nnf nnn nno nnt no- noa nob noc nof non noo not nta ntb ntc ntf ntn nto ntt oaa oab oac oaf oan oao oat ob- oba obb obc obf obn obo obt oc- oca ocb occ ocf ocn oco oct of- ofa ofb ofc off ofn ofo oft on- ona onb onc onf onn ono ont oo- ooa oob ooc oof oon ooo oot ot- ota otb otc otf otn oto ott taa tab tac taf tan tao tat tba tbb tbc tbf tbn tbo tbt tca tcb tcc tcf tcn tco tct tfa tfb tfc tff tfn tfo tft tna tnb tnc tnf tnn tno tnt to- toa tob toc tof ton too tot tta ttb ttc ttf ttn tto ttt

-ana aaaa aaab aaac aaaf aaan aaba aabb aabc aabt aaca aacb aacc aacf aacn aaco aact aafa aafb aafc aaff aana aaon aaoo aata aatc aatf aatt abaa abab abac abaf aban abat abb- abba abbb abbo abbt abca abcb abcc abcf abcn abct abff aboa abob abof abon aboo abot abta ac-t acaa acab acac acan acat acba acca accc accf acco acct acfc acft acoa acon acot acta actc actf acto actt afaa afan afao afat afca afcb afcc affa affc affo afft afoa afoo afta aftc aftn ana- anaa anab anac anan anao anat anba anbb anbo anca ancc anco anct anfa anfo anna annb anno annt ano- anoa anon ant- anta anto antt aoba aoca aonb aono aont aotc aotf at-t ataa atab atac atan atat atca atcc atcf atco atfb atfc atna atno atob atoc atof aton atot atta attn atto baaa baaf baan baat baba babb babo bac- baca bacc bacn baco bact bafc baff bafo baft bana banc bann bano bant baon bata batc batf batn bato batt bbbb bbfc bbfn bcaa bcat bcbc bcca bccc bcfc bcof bctc bfca bfta bftt bnoc bnta boab boac boan boat boba bobb bobo boca boco bofa boff bona bonc bonn bono bont boob booc boof boon boot bota botb botn boto bott btaa btaf btan btcc btfc btob bttb c-bo caaa caab caac caaf caan caat caba cabf cabo cac- caca cacc caco cafa cafb cafc caff cana canc cann cano cant cat- cata catb catc catf cato catt cbac cbat cbbc cbca cbcc cbcn cbct cbfb cbfc cbna cbot cbta cbtc cbtf ccaa ccab ccac ccaf ccat ccba ccbc ccbn ccca cccb cccc cccf ccfa ccfc ccff ccna ccnb ccnc ccnf ccob ccoc cctb cctc cctt cfaa cfab cfac cfao cfbc cfbn cfbt cfca cfcb cfcf cfcn cfco cffb cfnb cfoa cfta cftc cnaa cnac cnbc cnco cnfa cnna cnta cntc cntf coan coat coba cobb cobo coca coco coct cofc coff coft con- cona conc conf conn cono cont coob coof coon coot cota cotb cotc cotn coto cott ctab ctan ctba ctca ctcf ctfc ctfo ctot ctta cttn faaa faac faan faba fabo faca facc fact fafa fafc faff fafo fana fanc fano fant faon fata fatc fatf fato fatt fcab fcat fcba fcca fccf fcot fcto ffcc ffff fftf fnac fnta fntb foaf foan foba fobt foca foco fofo fono font foof foon foot fota foto fott ft-c ftan ftfc naaa naab naac naan naat naba nabc nabf nabo naca nacc nacf naco nafa nafc naff nafo nan- nana nanb nann nano nant naoc naot nata natc nato natt nbaa nbaf nbbc nbbo nbca nbcc nbco nbfa nbfc ncaa ncac ncat ncba ncbc ncca nccc nccf nccn ncct ncfc ncna ncnc ncoa ncoc ncta nctc nfaa nfat nfct nfff nfon nfta nftc nfto nnnn nnot nntn noaa noac noat noba nobc nobo noco noct non- nona nonn nono nont noo- noob noon nooo noot not- nota noto nott ntbc ntcc ntfc ntof ntto oafc oafo oban obba obbo obon obot ocab ocac ocan ocat ocbc occa occc occn occt ocfa ocna ocon oct- octa octo ofan off- offa offc offo ofna ofno ofta onab onan onat onc- onca oncf onco onct onna onno onon ont- ontc onto ooaa ooba ooff oona oont oooo ootb otac otan otfc oto- otof oton otoo otta otto taa- taaf taan taat taba tabb tabc tabo taca tacc taco tact tafa tafc taff tafo taft tana tann tano tant taoa tata tatb tato tatt tbaf tbca tbcb tbcc tbnf tbta tcca tccc tcfc tcnn tcon tctc tfca tfot tftc tnbc tnca tncc tnfc toab toan toat toba tobo tobt toca toco tofa toff tofo toft tona tonb tonn tono tooa toof toon toot tota totc toto tott ttab ttbb ttcn ttfa ttfc ttff ttfn