a-fu a-ha aaaa aaab aaac aaaf aaah aaba aabb aabc aabh aabt aaca aacb aacc aacf aach aact aacu aafa aafb aafc aaff aaha aata aatc aatf aatt abaa abab abac abaf abat abau abb- abba abbb abbt abca abcb abcc abcf abch abct abff abha abta abtu abua abuf abut ac-t acaa acab acac acat acba acca accc accf acch acct accu acfc acft acha achh acht achu acta actc actf acth actt actu acu- acuf acut afaa afat afca afcb afcc afch afcu affa affc afft afta aftc afua ahab ahac ahah ahat ahau ahfa ahha ahta ahua at-t ataa atab atac atat atca atcc atcf atch atfb atfc atha atta attu atua atub atuc auaa auca auch auct aufc auht aut- auth baaa baaf baah baat baba babb babu bac- baca bacc bach bact bafc baff baft baha baht bahu bata batc batf bath batt batu bau- bauf bbau bbbb bbch bbfc bcaa bcat bcbc bcca bccc bcfc bctc bcuc bfca bfta bftt bhat bhca bhcc bhff bhut bhuu btaa btaf btcc btfc bttb buat buba bubb bubu buca bucc buch bucu bufc buff buha but- buta butt caaa caab caac caaf caah caat caba cabf cabu cac- caca cacc cach cafa cafb cafc caff cafu caha caht cat- cata catb catc catf cath catt catu cauc cauf caut cbac cbat cbbc cbca cbcc cbct cbcu cbfb cbfc cbha cbta cbtc cbtf ccaa ccab ccac ccaf ccat ccba ccbc ccca cccb cccc cccf cccu ccfa ccfc ccff ccha cctb cctc cctt ccuc ccut cfaa cfab cfac cfbc cfbt cfca cfcb cfcf cffb cfta cftc cfth chaa chab chac chaf chah chat chau chca chch chfa chfc chha chtt chua chub chut ctab ctba ctca ctcf ctfc ctta cuau cub- cuba cubb cuca cucc cufa cufc cuff cut- cuta cutc cuth cutt faaa faac faah faba fabu faca facc fach fact fafa fafc faff faha fata fatc fatf fath fatt faut fcab fcat fcba fcca fccf fcch ffcc ffff fftf ft-c ftfc ftub ftuc fuat fubb fubu fuc- fuca fuct fufc fuff fufu futa futu haab haaf haat haba habt habu hafb haff haft haha haht hata hatb hath hatt hatu hau- hauf haut hbfc hbtu hcat hcbc hcca hccb hccc hcch hcfa hcfc hfba hhaa hhat hhhh htab htcc htfc huac huah huba hubb huch hucu hufc huff hufu huhu huta huth hutt hutu huub taa- taaf taat taba tabb tabc tabu taca tacc tach tact tafa tafc taff taft taha tahu tata tatb tath tatt tatu taua taub tauc taut tbaf tbca tbcb tbcc tbta tcca tccc tccu tcfc tch- tcha tchh tchu tctc tfca tfcu tftc thaa that thau thca thch thtb ttab ttbb ttfa ttfc ttff tttt tuat tuba tubb tubu tuca tucc tuch tufa tufc tuff tuft tufu tuht tuhu tuta tutt tutu uabc uaca uafa uata uath uatu uaua ubac ubba ubtf ucat ucbc ucca ucfa ucfb ucha ucua ucut ufcu uffa uhta uhuh utac utah utau utha uttu uuta uutf uuuu