a-ak aaaa aaab aaac aaad aaaf aaar aaas aaba aabb aabc aabd aabt aaca aacb aacc aacd aacf aack aacr aacs aact aada aadc aads aadt aafa aafb aafc aafd aaff aaka aara aarc aard aars aart aasa aasc aasd aasf aass aast aata aatc aatf aatk aatt abaa abab abac abad abaf abak abar abas abat abb- abba abbb abbr abbs abbt abca abcb abcc abcd abcf abcr abcs abct abda abff abra abrc abrs abs- absa absd absf abss abta abts ac-t acaa acab acac acad acar acas acat acba acca accc accd accf accs acct acda acdb acdc acdf acds acdt acfc acfd acfs acft ackd acks acr- acra acrc acrr acrs acsa acsc acsd acss acst acta actc actf acts actt adaa adab adac adad adak adar adas adat adba adbc adcc adcs adda addc addd addr adds adfa adfc adfs adra adrs adsa adsr adss adst adta adts afaa afad afak afar afat afbs afca afcb afcc afcs afdb afdc affa affc affs afft afka afkr afr- afra afrc afrs afsa afsb afsc afst afta aftc afts akaa akar akas akca akka akr- akra aksa akst arab arac arad araf arak arar aras arat arba arbs arc- arca arcs arct arda ardc ardf ards arfa arfb arfc arff arfs arft arka arks arr- arra arrc arrk arrr arrs arrt ars- arsa arsc arsd arsk arst arta artc artr arts asaa asab asac asad asaf asak asar asas asat asba asc- asca ascb ascc ascr asct asda asdf asds asfa aska askr asks askt asra asrc asrs assa assc assd assk assr asss asst asta astb astc astr asts at-t ataa atab atac atad atak atar atas atat atbs atca atcc atcf atck atcr atcs atdt atfb atfc atfs atka atkt atra atrc atrk atsb atsc atst atta attr atts baaa baad baaf baak baar baas baat baba babb babr babs bac- baca bacc back bacs bact bada badb badd badr bads bafc baff baft bak- baka bakr baks bakt bar- bara barb barc bard barf bark barr bars bart basa basc basf bask bass bast bata batc batf bats batt bbad bbas bbbb bbbs bbdd bbfc bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bcda bcds bcfc bcra bcrs bcsa bcsc bcss bctc bcts bd-r bdbc bddc bdsd bfas bfca bfcs bffs bfsr bfta bfts bftt brab brac brad braf brak bras brat brca brcb brda brds brdt brfc brka brkb brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bsbd bscs bsfa bsfc bsff bsfs bskt bsra bsrd bssc bssd bsts btaa btaf btcc btcs btdt btfc btrc btrt btss bttb c-cd caaa caab caac caaf caas caat caba cabf cabs cac- caca cacc cack cacr cada cadc cadd cadr cads cafa cafb cafc caff cafs caka cara carb carc card carf cark carr cars cart casa casb casc casd cask casr cass cast cat- cata catb catc catd catf cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbdb cbdc cbds cbfb cbfc cbka cbkr cbrd cbrt cbsa cbsc cbta cbtc cbtf ccaa ccab ccac ccad ccaf ccar ccas ccat ccba ccbc ccca cccb cccc cccf cccs ccdc ccdf ccdr ccds ccfa ccfc ccfd ccff ccra ccrc ccrf ccrs ccrt ccsa ccsd ccsf ccss ccst cctb cctc cctt cd-r cdaa cdac cdad cdba cdbf cdcs cdda cddb cddr cdfa cdfs cdrs cdss cfaa cfab cfac cfar cfbc cfbr cfbs cfbt cfca cfcb cfcf cfcs cfda cfds cffb cffr cfra cfrb cfrt cfsa cfta cftc cftk cftr ckac ckat ckbc ckck ckcs ckfr ckrc ckrd cksa cksb ckst cktb ckts crab crac craf crar cras crat crbc crca crcc crcr crda crdc crfc crfs crkc crrt crsa crss crst crtc crtf crts csaa csab csac csak csar csas csat csbf cscb cscc cscd cscf cscr cscs csda csdb csdr csfc csfr cska csks csra csrc csrd csrs cssa cssd cssr csta cstc cstd cstr csts ctab ctba ctbs ctca ctcf ctfc ctfs ctrc ctrs ctsa ctsc ctss ctta ctts daab daad daar daas daba dabb dabs dabt daca dacs dact dada dads dafa dafc daff dafs daft daka daks dara darb darc dard darf dark darr dars dart dasa dasb dasc dasd dask dass dast data datr dats datt dbar dbas dbcc dbcs dbfc dbfs dbrs dbsa dbss dbtt dcas dcbc dcca dccb dccc dccs dcct dcdb dcds dcfc dcfs dcra dcrk dcsc dcss dctc dcts dddd ddrc ddss ddts dfaf dfas dfcc dfcs dfds dfdt dffa dfrf dftr dfts dkba dkdc draa drab drac drad draf drak drar dras drat drba drbc drca drda drfc drra drrs drsa dsac dsba dsbc dscc dscr dscs dsda dsdr dsfa dsfc dsrc dsrr dssa dssc dsst dstc dsts dtaa dtac dtcc dtfc dtss f--k faaa faac faad faas faba fabd fabs faca facc fack facs fact fada fadd fads fafa fafc faff fakt fara farb farc fard fark farr fars fart fasa fasc fasd fass fast fata fatc fatf fats fatt fbar fbrs fbsd fcab fcar fcas fcat fcba fcbs fcca fccf fcda fcds fcra fcsc fcst fdca fdst fdtc ffar ffcc ffff ffrr ffsa ffss fftf fkab frab frac frad frak fras frat frbc frcc frfc frsb frsc frst frta fsas fscb fscc fsck fsra fssa fssc fssf fsta ft-c ftcd ftfc ftrs ftsa ftsr kaaa kaab kaaf kaak kaar kaas kaat kaba kabb kabc kabd kabf kabr kacb kacc kacd kacs kact kad- kada kadd kadf kadr kads kadt kafa kafc kaff kafr kafs kaka kakc kakk kaks kakt kara karb kard karf kark karr kars kart kas- kasa kasb kasc kasf kask kasr kass kast kat- kata katb katc katd katf katk katr kats katt kbaa kbab kbac kbad kbak kbar kbas kbat kbba kbbb kbbc kbbd kbbf kbbk kbbr kbbs kbbt kbca kbcb kbck kbcr kbcs kbct kbdb kbdf kbdr kbds kbfb kbfc kbff kbfk kbfr kbfs kbft kbkb kbkf kbkk kbkr kbra kbrb kbrc kbrd kbrf kbrk kbrt kbsa kbsb kbsk kbsr kbss kbst kbta