a-ak a-be a-ok aaaa aaab aaae aaaf aaba aabb aabt aaea aafa aafb aaff aaka aake aaoe aaoo aata aatf aatk aatt abaa abab abae abaf abak abat abb- abba abbb abbe abbo abbt abee abet abff aboa abob abof abok aboo abot abta aeaf aeka aeta aetf aeto aett afaa afak afao afat afee afek afet affa affo afft afka afoa afoe afoo afta afte akaa akae akao akee akka akko akok akot akte aoba aotf at-t ataa atab atae atak atat atea atee atef ateo atfb atfe atka atkt atob atoe atof atok atot atta atte atto baaa baaf baak baat baba babb babe babo baek baff bafo baft bak- baka bake bako bakt bata bate batf bato batt bbbb bbeb bbet beaf beak beat beba bebb bebe bebo beeb beef beek beet befa befe beff befo beft beka beke beko beo- beof beok beot beta bete beto bett bfta bftt boab boak boat boba bobb bobe bobo boea boee boef boeo boet bofa bofe boff boka boke boko boob booe boof book boot bota botb bote boto bott btaa btaf btek btob bttb eaaf eaba eafb eata eate ebba ebbo eboe eboo eeea eeee eefa eefe eeka eeke eeta eete efab efeo efet effa efke eft- efta eka- ekab ekeb ekek eket ekka ekoa ekta eoka eota eoto etak etat etee etfa etfb etfe etka etoe etok etta ette etto f--k faaa faba fabe fabo faeb fafa fafe faff fafo fake fako fakt fata fate fatf fato fatt feaf feak feat feba febo feeb feek feet fefe feff fefo feke feko feof feta fete fett ffee ffff fftf fkab foaf foak foba fobt fofo foke foof fook foot fota fote foto fott ftea kaaa kaab kaaf kaak kaat kaba kabb kabe kabf kabo kaeo kaet kafa kafe kaff kaka kake kakk kako kakt kaoa kaok kat- kata katb kate katf katk kato katt kbaa kbab kbae kbak kbat kbba kbbb kbbe kbbf kbbk kbbo kbbt kbeb kbee kbef kbek kbeo kbet kbfb kbff kbfk kbfo kbft kbkb kbkf kbkk kbko kboa kbob kboe kbok kboo kbot kbta kbtb kbte kbtf kbtk kbto kbtt kea- keak keat keba kebb kebe kebt keef keek keet kefa kefb keff keft keka kekb keke keko keok ket- keta kete ketf ketk keto kett kfab kfat kfbk kfbt kfeb kffa kffb kfff kffk kfka kfkb kfok kfoo kfta kfte kftk kftt kkaa kkat kkba kkbb kkbe kkbo kkbt kkea kkft kkkk kkoa kkob kkoo kkot kktk koab koae koak koba kobb kobe kobk kobo koea kofa kofe koff kofk kofo koft koka kokb koke kokf kokk koko koob kook kooo koot kota kotb kote kotk koto kott ktaa ktae ktak ktao ktat ktba ktbb ktbt ktea ktee ktek ktfb ktfo ktkb ktke ktkk ktko ktkt ktob ktoe ktok ktoo ktot kttf kttk ktto kttt o-eo oafo oake oate obak obba obbo obea obet obkb oboe obok obot oeta ofek off- offa offe offo ofta okak oket okka okko okok okot okta okto ooaa ooak ooba oobe ooff oooo ootb otak otea otee oto- otoe otof otok otoo otta otte otto taa- taaf taat taba tabb tabe tabo tafa tafe taff tafo taft taka take takk tako takt taoa tata tatb tate tato tatt tbaf tbta teak teat teba tebo teef teek teet teff teft teka teke teok teta tete teto tett tfae tfeb tfot tkof toab toat toba tobe tobo tobt toea toee toek toet tofa toff tofo toft toka toke toko tooa toof took toot tota tote toto tott ttab ttbb tteo ttfa ttff ttoe tttt