a-ak a-ii aaaa aaab aaac aaai aaal aaba aabb aabc aabi aabl aaca aacb aacc aaci aack aacl aaib aaic aaii aaka aala aalc aali aall abaa abab abac abai abak abal abb- abba abbb abbi abca abcb abcc abci abcl abia abib abic abil abla acaa acab acac acai acba acbl acca accc acci aci- acia acic acla aclc acli aiai aiba aibl aica aicc aiia aiib aiic aika aiki aila aili akaa akai akal akca akia akik akil akka akki alaa alac alai alak alal alb- alba albc albi alca alcc ali- alia alib alii alik alil alk- alka alkb alki all- alla alli alll ba-i baaa baak baal baba babb babi bac- baca bacc baci back baia baib baic baik bail bak- baka baki bakl bala balc bali balk ball bbbb bbci bblb bcaa bcbc bcca bccc bcci bccl bcia biak bial biba bibb bibi bibl bica bicc bici bick bila bili bilk bill blaa blab blac blak blic blik blkb caaa caab caac caal caba cabi cac- caca cacc caci cack caia caib caic caik cail caka cala calc cali calk call cbac cbal cbbc cbca cbcc cbcl cbia cbka cbkl cblb cblc ccaa ccab ccac ccai ccba ccbc ccca cccb cccc ccci cccl ccic ccii ccil ccla cclc ccli ciaa ciak cial ciba cibc cibi cica cicc cici ciia ciii cika cila cili cilk cill ckac ckbc ckbi ckck ckcl clab clai clib clic clii clik iaaa iaac iaai iaal iaba iaca iacc iaia iala iall ibac ibca ibia icaa icab icac icai ical icbc icca iccb iccc icci iccl icll iiac iica iiii iila ikki ikla ilac ilal ilbc ilca ilia ilic ilka ilki ill- illa illi k-ci kaaa kaab kaai kaak kaal kaba kabb kabc kabi kacb kacc kaci kacl kaia kaib kaic kaii kaik kail kaka kakc kaki kakk kala kalb kalc kali kalk kall kbaa kbab kbac kbai kbak kbal kbba kbbb kbbc kbbi kbbk kbbl kbca kbcb kbci kbck kbcl kbia kbib kbic kbik kbil kbkb kbkk kbkl kbla kblb kbll kcaa kcab kcac kcai kcal kcba kcbc kcbi kcbk kcbl kcca kccb kccc kcci kcck kccl kcic kcii kcil kckc kckk kckl kcla kclc kcli kclk kcll kiab kiac kiai kiba kibb kibc kibi kibl kica kicb kicc kick kicl kiia kiic kiii kiik kika kikc kiki kikk kila kilb kili kilk kill kkaa kkac kkai kkal kkba kkbb kkbi kkbl kkcb kkci kkck kkcl kkia kkic kkik kkkk kklb kklc kkli kkll klaa klab klac klai klak klal klbb klbc klbl klca klcb klcc klci klck klcl klib klic klik klil klka klkc klkk klkl klla kllb kllc kllk laaa laac laak laal laba labi laca lacc laci lack lacl laia laic laik lail laka laki lala lali lall lbcc lbia lcac lcbc lcca lccc lcia liac liba libc lica lick liia liii lika lila lilb lili lill lkab lkal llcc lllc llll