-ana aaaa aaab aaac aaaf aaan aaar aaba aabb aabc aabt aaca aacb aacc aacf aacn aaco aacr aact aafa aafb aafc aaff aana aaon aaoo aara aarc aaro aart aata aatc aatf aatt abaa abab abac abaf aban abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abcf abcn abcr abct abff aboa abob abof abon aboo abor abot abra abrc abro abta ac-t acaa acab acac acan acar acat acba acca accc accf acco acct acfc acft acoa acon acor acot acr- acra acrc acro acrr acta actc actf acto actt afaa afan afao afar afat afca afcb afcc affa affc affo afft afoa afoo afor afr- afra afrc afro afta aftc aftn ana- anaa anab anac anan anao anar anat anba anbb anbo anca ancc anco anct anfa anfo anna annb anno annt ano- anoa anon anor anrc ant- anta anto antr antt aoba aoca aonb aono aont aora aorb aorn aort aotc aotf arab arac araf aran arar arat arba arc- arca arco arct arfa arfb arfc arff arft arna arno arnt aroa arob aron aroo aror arr- arra arrc arro arrr arrt arta artc arto artr at-t ataa atab atac atan atar atat atca atcc atcf atco atcr atfb atfc atna atno atob atoc atof aton ator atot atra atrc atrn atro atta attn atto attr baaa baaf baan baar baat baba babb babo babr bac- baca bacc bacn baco bact bafc baff bafo baft bana banc bann bano banr bant baon bar- bara barb barc barf barn baro barr bart bata batc batf batn bato batt bbbb bbfc bbfn bbrc bcaa bcar bcat bcbc bcca bccc bcfc bcof bcor bcra bctc bfca bfta bftt bnoc bnor bnrr bnta boab boac boan boar boat boba bobb bobo boca boco bofa boff bona bonc bonn bono bont boob booc boof boon boor boot bor- bora borf born boro borr bort bota botb botn boto bott brab brac braf bran brao brat brca brcb brfc brna brno broa brob broc bron broo bror brot brrr brtc btaa btaf btan btcc btfc btob btor btrc btrt bttb c-bo caaa caab caac caaf caan caat caba cabf cabo cac- caca cacc caco cacr cafa cafb cafc caff cana canc cann cano cant caor cara carb carc carf carn caro carr cart cat- cata catb catc catf cato catt cbac cbar cbat cbbc cbca cbcc cbcn cbcr cbct cbfb cbfc cbna cbot cbrn cbrt cbta cbtc cbtf ccaa ccab ccac ccaf ccar ccat ccba ccbc ccbn ccca cccb cccc cccf ccfa ccfc ccff ccna ccnb ccnc ccnf ccnr ccob ccoc ccra ccrc ccrf ccrt cctb cctc cctt cfaa cfab cfac cfao cfar cfbc cfbn cfbr cfbt cfca cfcb cfcf cfcn cfco cffb cffr cfnb cfnr cfoa cfor cfra cfrb cfrn cfrt cfta cftc cftr cnaa cnac cnbc cnco cnfa cnna cnrc cnrr cnrt cnta cntc cntf cntr coan coat coba cobb cobo coca coco coct cofc coff coft con- cona conc conf conn cono cont coob coof coon coot cor- cora corb corc corf corn coro corr cort cota cotb cotc cotn coto cott crab crac craf cran crar crat crbc crca crcc crcr crfc crna crob croc cron croo cror crot crrt crtc crtf ctab ctan ctba ctca ctcf ctfc ctfo ctor ctot ctrc ctrn ctta cttn faaa faac faan faba fabo faca facc fact fafa fafc faff fafo fana fanc fano fant faon fara farb farc faro farr fart fata fatc fatf fato fatt fbar fcab fcar fcat fcba fcca fccf fcot fcra fcto ffar ffcc ffff ffrr fftf fnac fnar fnta fntb foaf foan foar foba fobt foca foco fofo fono font foof foon foot for- fora forb forn foro forr fort fota foto fott frab frac fran frat frbc frcc frcn frfc frob fron frot frta ft-c ftan ftfc naaa naab naac naan naar naat naba nabc nabf nabo naca nacc nacf naco nafa nafc naff nafo nan- nana nanb nann nano nant naoc naor naot nara narc narf narn naro narr nart nata natc nato natt nbaa nbaf nbar nbbc nbbo nbca nbcc nbco nbfa nbfc ncaa ncac ncar ncat ncba ncbc ncca nccc nccf nccn nccr ncct ncfc ncna ncnc ncoa ncoc ncor ncra ncrc ncta nctc nctr nfaa nfat nfct nfff nfon nfra nfta nftc nfto nnnn nnot nntn noaa noac noat noba nobc nobo noco noct non- nona nonn nono nont noo- noob noon nooo noor noot nor- nora norb norc norf norn noro norr nort not- nota noto nott nrab nrca nrfc nrna nroc nron nrrc nrta ntbc ntcc ntfc ntof ntrc ntto nttr oafc oafo oara oban obba obbo obon obor obot obra obro ocab ocac ocan ocat ocbc occa occc occn occt ocfa ocna ocon ocra ocro ocrr oct- octa octo ofan ofcr off- offa offc offo offr ofna ofno ofor ofra ofta onab onan onar onat onc- onca oncf onco onct onna onno onon onor onra ont- ontc onto ooaa ooba oocr ooff oona oont oooo oora oort ootb orab orac oran orao orar orat orba orbb orbo orca orco orff orna ornc orno oro- orof oron oror orot orra orro orta ortc orto otac otan otar otfc oto- otof oton otoo otor otra otro otta otto raab raaf raan raat raba rabb rabo rac- raca racc raco ract rafa rafc raff raft rana ranc rann rano rant raob raoc rara rarb rarf raro rata ratf rato ratt rbaf rbbb rbbr rcac rcaf rcbc rcbo rccb rccc rcfc rcnr rcon rctc rffc rftc rnaf rnbr rnco rnnt rnot roab roaf roan roar roat rob- roba robb robo robt roca rocc roco rofc roff rofo rona ronc rono ront roob roof roon roor root rora rorc roro rort rota rotc rotn roto rotr rott rrat rrfc rrna rrrr rtan rtbf rtca rtcc rtfb rtfc taa- taaf taan taar taat taba tabb tabc tabo taca tacc taco tact tafa tafc taff tafo taft tana tann tano tant taoa taor tara tarb tarc tarf tarn taro tarr tart tata