a-ak a-be aaaa aaab aaae aaaf aaal aaba aabb aabl aaea aafa aafb aaff aafl aaka aake aala aale aall abaa abab abae abaf abak abal abb- abba abbb abbe abee abel abff abla able aeaf aeka aela afaa afak afee afek afel affa afka afla afle akaa akae akal akee akel akka akle alaa alae alak alal alb- alba albe alea alee alef alek alfa alfe alk- alka alkb alke all- alla alle alll baaa baaf baak baal baba babb babe baek bael baff bak- baka bake bakl bala bale balf balk ball bbbb bbeb bblb beaf beak beal beba bebb bebe beeb beef beek beel befa befe beff beka beke bela bele belk bell bffl blaa blab blae blak blea bleb blee blek blkb e-la eaaf eaba eafb eala eale ebal ebba ebel ebla eeea eeee eefa eefe eefl eeka eeke eele efab effa efke efla eka- ekab ekeb ekek ekka el-b elab elal elba elbe elea elee elef elek elfa elfe elka elke ella elle f--k faaa faba fabe faeb fafa fafe faff fake fala fale falk fall fbla fble feaf feak feal feba feeb feek feel fefe feff feke fela fele felf felk fell ffee ffff fkab flab flae flak flea flee kaaa kaab kaaf kaak kaal kaba kabb kabe kabf kael kafa kafe kaff kaka kake kakk kala kalb kale kalf kalk kall kbaa kbab kbae kbak kbal kbba kbbb kbbe kbbf kbbk kbbl kbeb kbee kbef kbek kbel kbfb kbff kbfk kbfl kbkb kbkf kbkk kbkl kbla kblb kble kblf kbll kea- keak keal keba kebb kebe keef keek keel kefa kefb keff keka kekb keke kekl kela kele kelf kelk kell kfab kfal kfbk kfeb kfel kffa kffb kfff kffk kfka kfkb kfla kflb kflf kfll kkaa kkal kkba kkbb kkbe kkbl kkea kkkk kklb kklf kkll klaa klab klaf klak klal klbb klbe klbf klbl klea kleb klee klef klek klfa klfe klff klka klkk klkl klla kllb klle kllk laaa laak laal laba labe lael lafb lafe laff laka lake lala lale lall leaa leaf leak leal leba leea leef leek leel lefa lefe leff leka leke lekk lela lele lell lkab lkal llef llll