a-ak a-be aaaa aaab aaac aaae aaaf aaal aaam aaba aabb aabc aabl aabm aaca aacb aacc aace aacf aack aacl aacm aaea aaec aaem aafa aafb aafc aaff aafl aaka aake aala aalc aale aall aama aamb aamc aame abaa abab abac abae abaf abak abal abam abb- abba abbb abbe abca abcb abcc abcf abcl abec abee abel abff abla able abma abmb abmc acaa acab acac acae acba acbl acca accc acce accf accm ace- acea acec acek acel acem acfc acfe acfl acfm acke acla aclc acle acma acmc acme acmf aeac aeaf aecb aecl aeka aela aelc afaa afak afam afca afcb afcc afee afek afel affa affc afka afla aflc afle afma afmc akaa akae akal akam akca akee akel akka akle alaa alac alae alak alal alam alb- alba albc albe albm alca alcc alce alea alec alee alef alek alem alfa alfe alk- alka alkb alke all- alla alle alll alma almc alme amaa amac amae amal amam amb- amba ambe amca amcc amec amee amel amfm amka amla amm- amma amme baaa baaf baak baal baam baba babb babe babm bac- baca bacc bace back baek bael bafc baff bak- baka bake bakl bala balc bale balf balk ball balm bama bamb bamc bame bamf baml bamm bbbb bbcm bbeb bbfc bblb bcaa bcam bcbc bcca bccc bccl bccm bcec bcfc bcfm bcma beaf beak beal beam beba bebb bebe beca beck beeb beef beek beel beem befa befe beff beka beke bela bele belk bell belm bema beme bfca bffl bfme blaa blab blac blae blak blam blea bleb blee blek blem blfc blkb blme bmaa bmce bmfc caaa caab caac caaf caal caam caba cabe cabf cac- caca cacc cace cack cacm caec caem cafa cafb cafc cafe caff cafl caka cake cala calc cale calf calk call calm cama camb camc came camk caml camm cbac cbal cbbc cbca cbcc cbce cbcl cbcm cbea cbec cbee cbef cbfb cbfc cbka cbkl cbkm cblb cblc cbme ccaa ccab ccac ccaf ccam ccba ccbc ccca cccb cccc cccf cccl cccm ccee ccel ccfa ccfc ccff ccfl cckm ccla cclc cclm ccma ccmb ccmc ccmm ceac ceal ceba cec- ceca cece cecm ceeb ceec ceel ceem cef- cefa cefc ceke cel- cela celc cele celf cell cema cemb ceme cemm cfaa cfab cfac cfae cfam cfbc cfca cfcb cfcf cfcl cfcm cffb cfma cfmb cfml ckac ckbc ckbe ckck ckcl ckcm ckem cklf cklm ckml clab claf clam clea clec clee clef clek clem cmaa cmac cmba cmbc cmcc cmea cmec cmfb cmla cmll cmmb cmmc cmml e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale eama eame ebac ebal ebam ebba ebbc ebcc ebel ebfc ebla ecaa ecac ecal ecam ecbc ecbe ecca eccb eccc ecce eccl eccm ecef ecem ecfa ecfc ecka ecla ecma eeca eeea eeee eefa eefe eefl eeka eeke eele efab efca effa efke efla efma eka- ekab ekam ekeb ekek ekfc ekka ekma el-b elab elac elal elam elba elbe elca elcb elce elea elec elee elef elek elem elfa elfc elfe elka elke ella elle elma elme elml emac emae emam emba embe emcc emcf emek emel emle emlm emma emme emml f--k faaa faac faam faba fabe fabm faca facc face fack faeb faem fafa fafc fafe faff fake fala falc fale falk fall falm fama fame fbla fble fcab fcal fcba fcca fccf feaf feak feal feam feba fece feck feeb feek feel feem fefc fefe feff feke fela fele felf felk fell felm fema femb feme femm ffcc ffee ffff fkab flab flac flae flak flam flcl flea flee flem flmb fmca fmea kaaa kaab kaaf kaak kaal kaam kaba kabb kabc kabe kabf kacb kacc kace kacl kael kafa kafc kafe kaff kafm kaka kakc kake kakk kakm kala kalb kalc kale kalf kalk kall kalm kam- kama kamb kamc kame kaml kamm kbaa kbab kbac kbae kbak kbal kbam kbba kbbb kbbc kbbe kbbf kbbk kbbl kbbm kbca kbcb kbce kbck kbcl kbeb kbec kbee kbef kbek kbel kbfb kbfc kbff kbfk kbfl kbfm kbkb kbkf kbkk kbkl kbla kblb kble kblf kbll kblm kbmb kbmc kbme kcaa kcab kcac kcal kcam kcba kcbc kcbf kcbk kcbl kcca kccb kccc kcck kccl kcea kceb kcec kcee kcel kcfa kcfb kcfc kcfl kcfm kckc kckf kckk kckl kckm kcla kclc kcle kclf kclk kcll kclm kcmb kcmc kcme kcmf kcmk kcml kcmm kea- keak keal keam keba kebb kebc kebe keca keck keef keek keel keem kefa kefb kefc keff keka kekb kekc keke kekl kela kele kelf kelk kell kelm kema kemb kemc keme kemm kfab kfac kfal kfbc kfbk kfcf kfcm kfeb kfel kffa kffb kfff kffk kffm kfka kfkb kfla kflb kflc kflf kfll kfma kfmb kfme kfmf kfmk kfml kfmm kkaa kkac kkal kkam kkba kkbb kkbe kkbl kkcb kkck kkcl kkcm kkea kkfm kkkk kklb kklc kklf kkll kkma kkmc kkmk kkml klaa klab klac klaf klak klal klam klbb klbc klbe klbf klbl klbm klca klcb klcc klce klck klcl klcm klea kleb klec klee klef klek klem klfa klfc klfe klff klfm klka klkc klkk klkl klla kllb kllc klle kllk klmf klmk klmm kmac kmae kmak kmal kmam kmbc kmbl kmca kmcb kmcc kmce kmcf kmcl kmcm kmea kmel kmem kmfa kmfc kmfm kmke kmkf kmkk kmkl kmla kmlb kmle kmlk kmme kmmf kmmk kmml kmmm laaa laac laak laal laam laba labe laca lacc lace lack lacl lael laem lafb lafc lafe laff laka lake lala lale lall lalm lama lamb lame lamk lamm lbcc lbmc lcac lcbc lcca lccc lcce lccm lcfc leaa leaf leak leal leam leba leca lece leck leea leef leek leel leem lefa lefe leff leka leke lekk lela lele lell lema leme lemm lfca lfcc lkab lkal llcc llef lllc llll lmcc lmfm maaa maac maaf maak maal maam maba mabe mac- maca macb macc mace mack maee mael maem mafa mafb mafc