a-ak a-ok aaaa aaab aaac aaaf aaar aaba aabb aabc aabt aaca aacb aacc aacf aack aaco aacr aact aafa aafb aafc aaff aaka aaoo aara aarc aaro aart aata aatc aatf aatk aatt abaa abab abac abaf abak abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abcf abcr abct abff aboa abob abof abok aboo abor abot abra abrc abro abta ac-t acaa acab acac acar acat acba acca accc accf acco acct acfc acft acoa acor acot acr- acra acrc acro acrr acta actc actf acto actt afaa afak afao afar afat afca afcb afcc affa affc affo afft afka afkr afoa afoo afor afr- afra afrc afro afta aftc akaa akao akar akca akka akko akok akot akr- akra aoba aoca aora aorb aort aotc aotf arab arac araf arak arar arat arba arc- arca arco arct arfa arfb arfc arff arft arka arko aroa arob aroo aror arr- arra arrc arrk arro arrr arrt arta artc arto artr at-t ataa atab atac atak atar atat atca atcc atcf atck atco atcr atfb atfc atka atkt atob atoc atof atok ator atot atra atrc atrk atro atta atto attr baaa baaf baak baar baat baba babb babo babr bac- baca bacc back baco bact bafc baff bafo baft bak- baka bako bakr bakt bar- bara barb barc barf bark baro barr bart bata batc batf bato batt bbbb bbfc bbrc bcaa bcar bcat bcbc bcca bccc bcfc bcof bcor bcra bctc bfca bfta bftt boab boac boak boar boat boba bobb bobo boca bock boco bofa boff boka boko boob booc boof book boor boot bor- bora borf bork boro borr bort bota botb boto bott brab brac braf brak brao brat brca brcb brfc brka brkb broa brob broc brok broo bror brot brrr brtc btaa btaf btcc btfc btob btor btrc btrt bttb c-bo caaa caab caac caaf caat caba cabf cabo cac- caca cacc cack caco cacr cafa cafb cafc caff caka caor cara carb carc carf cark caro carr cart cat- cata catb catc catf cato catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbfb cbfc cbka cbko cbkr cbot cbrt cbta cbtc cbtf ccaa ccab ccac ccaf ccar ccat ccba ccbc ccca cccb cccc cccf ccfa ccfc ccff ccob ccoc ccra ccrc ccrf ccrt cctb cctc cctt cfaa cfab cfac cfao cfar cfbc cfbr cfbt cfca cfcb cfcf cfco cffb cffr cfoa cfor cfra cfrb cfrt cfta cftc cftk cftr ckac ckat ckbc ckck ckco ckfr ckoa ckob ckoc ckoo ckor ckot ckrc cktb coak coat coba cobb cobo coca cock coco coct cofc coff coft cok- coka coko coob coof cook coot cor- cora corb corc corf cork coro corr cort cota cotb cotc coto cott crab crac craf crar crat crbc crca crcc crcr crfc crkc crob croc crok croo cror crot crrt crtc crtf ctab ctba ctca ctcf ctfc ctfo ctor ctot ctrc ctta f--k faaa faac faba fabo faca facc fack fact fafa fafc faff fafo fako fakt fara farb farc fark faro farr fart fata fatc fatf fato fatt fbar fcab fcar fcat fcba fcca fccf fcot fcra fcto ffar ffcc ffff ffrr fftf fkab foaf foak foar foba fobt foca fock foco fofo foof fook foot for- fora forb fork foro forr fort fota foto fott frab frac frak frat frbc frcc frfc frob frot frta ft-c ftfc kaaa kaab kaaf kaak kaar kaat kaba kabb kabc kabf kabo kabr kacb kacc kaco kact kafa kafc kaff kafr kaka kakc kakk kako kakt kaoa kaoc kaok kaor kara karb karf kark karo karr kart kat- kata katb katc katf katk kato katr katt kbaa kbab kbac kbak kbar kbat kbba kbbb kbbc kbbf kbbk kbbo kbbr kbbt kbca kbcb kbck kbco kbcr kbct kbfb kbfc kbff kbfk kbfo kbfr kbft kbkb kbkf kbkk kbko kbkr kboa kbob kboc kbok kboo kbot kbra kbrb kbrc kbrf kbrk kbro kbrt kbta kbtb kbtc kbtf kbtk kbto kbtr kbtt kcaa kcab kcac kcar kcat kcba kcbc kcbf kcbk kcbr kcca kccb kccc kcck kccr kcct kcfa kcfb kcfc kcfo kcft kckc kckf kckk kcko kckr kcob kcof kcor kcot kcrc kcro kcrr kcrt kcta kctb kctc kcto kfab kfac kfar kfat kfbc kfbk kfbt kfcf kfco kfcr kffa kffb kfff kffk kfka kfkb kfok kfoo kfor kfra kfrc kfro kfrr kfta kftc kftk kftt kkaa kkac kkar kkat kkba kkbb kkbo kkbr kkbt kkcb kkck kkco kkcr kkct kkfr kkft kkkk kkoa kkob kkoo kkor kkot kkrb kkrc kkrf kkrk kkro kkrr kkrt kktc kktk koab koac koak koar koba kobb kobc kobk kobo kobr koca kocb kocf kock koct kofa kofc koff kofk kofo koft koka kokb kokc kokf kokk koko kokr koob kooc kook kooo koor koot kora korb korc korf kork koro korr kort kota kotb kotc kotk koto kotr kott krab krac krak krar krat krba krbb krbk krbr krbt krca krcb krcc krco krfc krff krfo krft krka krkc krkk krko krkr kroa krob kroc krof krok kroo kror krrb krrc krrf krrk krro krrr krrt krta krtc krtk krto krtr ktaa ktak ktao ktar ktat ktba ktbb ktbc ktbr ktbt ktcc ktck ktco ktcr ktfb ktfc ktfo ktkb ktkc ktkk ktko ktkr ktkt ktob ktoc ktok ktoo ktor ktot ktrb ktrc ktrf ktrk ktro ktrr ktrt kttc kttf kttk ktto kttr kttt oafc oafo oara obak obba obbo obkb obok obor obot obra obro ocab ocac ocak ocat ocbc occa occc occt ocfa ocra ocro ocrr oct- octa octo ofcr off- offa offc offo offr ofor ofra ofta okak okka okko okok okor okot okra okro okta okto ooaa ooak ooba oocr ooff oooo oora oort ootb orab orac orak orao orar orat orba orbb orbo orca orco orff orka orko oro- orof orok oror orot orra orro orta ortc orto otac otak otar otfc oto- otof otok otoo otor otra otro otta otto raab raaf raak raat raba rabb rabk rabo rac- raca racc rack raco ract rafa