a-ak a-fu aaaa aaab aaac aaaf aaal aaba aabb aabc aabl aaca aacb aacc aacf aack aacl aacu aafa aafb aafc aaff aafl aaka aaku aala aalc aall aalu abaa abab abac abaf abak abal abau abb- abba abbb abca abcb abcc abcf abcl abff abla abua abuf abuk abul acaa acab acac acba acbl acca accc accf accu acfc acfl acla aclc aclu acu- acuf acul afaa afak afca afcb afcc afcu affa affc afka afla aflc afua akaa akal akca akka akku akua alaa alac alak alal alau alb- alba albc albu alca alcc alfa alk- alka alkb alku all- alla alll allu alua aluf aluk auaa auca aufc aul- aula aulf aull aulu baaa baaf baak baal baba babb babu bac- baca bacc back bafc baff bak- baka bakl baku bala balc balf balk ball balu bau- bauf bauk baul bbau bbbb bbfc bblb bcaa bcbc bcca bccc bccl bcfc bcuc bfca bffl blaa blab blac blak blau blcu blfc blkb blub bluf bual buba bubb bubu buca bucc buck bucu bufc buff buka bukk buku bula bulb bulk bull bulu caaa caab caac caaf caal caba cabf cabu cac- caca cacc cack cafa cafb cafc caff cafl cafu caka cala calc calf calk call calu cauc cauf cauk caul cbac cbal cbbc cbca cbcc cbcl cbcu cbfb cbfc cbka cbkl cblb cblc ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf cccl cccu ccfa ccfc ccff ccfl ccla cclc ccuc cfaa cfab cfac cfbc cfca cfcb cfcf cfcl cffb ckac ckbc ckck ckcl cklf clab claf clau club cuau cub- cuba cubb cuca cucc cuck cufa cufc cuff cuk- cuka cula culb culc culk cull f--k faaa faac faba fabu faca facc fack fafa fafc faff faku fala falc falk fall falu faul fbla fcab fcal fcba fcca fccf fcuk ffcc ffff fkab flab flac flak flcl flub fluf fubb fubu fuc- fuca fuck fufc fuff fufu fuka fukk fuku fula fulk full fulu kaaa kaab kaaf kaak kaal kaba kabb kabc kabf kabu kacb kacc kacl kacu kafa kafc kaff kafu kaka kakc kakk kaku kala kalb kalc kalf kalk kall kalu kau- kaub kauc kauk kaul kbaa kbab kbac kbak kbal kbba kbbb kbbc kbbf kbbk kbbl kbbu kbca kbcb kbck kbcl kbcu kbfb kbfc kbff kbfk kbfl kbkb kbkf kbkk kbkl kbla kblb kblf kbll kblu kbua kbub kbuc kbuf kbuk kbul kbuu kcaa kcab kcac kcal kcau kcba kcbc kcbf kcbk kcbl kcbu kcca kccb kccc kcck kccl kccu kcfa kcfb kcfc kcfl kckc kckf kckk kckl kcla kclc kclf kclk kcll kclu kcua kcub kcuf kcuk kcul kfab kfac kfal kfbc kfbk kfcf kffa kffb kfff kffk kfka kfkb kfla kflb kflc kflf kfll kful kkaa kkac kkal kkba kkbb kkbl kkcb kkck kkcl kkkk kklb kklc kklf kkll kkua kkuu klaa klab klac klaf klak klal klbb klbc klbf klbl klbu klca klcb klcc klck klcl klfa klfc klff klka klkc klkk klkl klla kllb kllc kllk klub kluf kluk kluu kuac kuaf kuau kuba kubb kubc kubu kuca kucb kucc kufa kufc kuff kuka kukk kukl kuku kula kulb kulf kull kulu kuub kuuk kuul kuuu laaa laac laak laal laba labu laca lacc lack lacl lacu lafb lafc laff laka lala lall lalu laub lauf lauk laul lbcc lcac lcbc lcca lccc lcfc lfca lfcc lkab lkal llcc lllc llll luau luba luca luck luff lufu luka lula lull lulu luua luuk uabc uaca uafa uaua ubac ubal ubba ubla ucak ucal ucbc ucca ucfa ucfb ucka ucla ucua ufcu uffa ufuk ukaf ukba ukcc ukla ulaa ulbc ulcc ulla ulua uluk ulul uulu uuuu