a-ak a-ii aaaa aaab aaac aaad aaai aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aack aada aadc aadi aaib aaic aaii aaka abaa abab abac abad abai abak abb- abba abbb abbi abca abcb abcc abcd abci abda abdi abia abib abic abid abza acaa acab acac acad acai acba acca accc accd acci acda acdb acdc acdi aci- acia acic acid ackd adaa adab adac adad adai adak adba adbc adbi adcc adci adda addc addd addi adia adib adic adik adki aiai aiba aica aicc aicd aida aidb aidc aidi aiia aiib aiic aiid aika aiki aiza aizi akaa akai akca akia akid akik akka akki aza- azab azad azai azaz azca azia aziz azki azza azzi ba-i baaa baad baak baaz baba babb babi bac- baca bacc baci back bacz bada badb badd badi baia baib baic baid baik bak- baka baki baza bazi bbad bbbb bbci bbdd bcaa bcbc bcca bccc bcci bcda bcia bdbc bddc bdii biad biak biba bibb bibi bica bicc bici bick bida bidi bizz bzzz c-cd caaa caab caac caba cabi cac- caca cacc caci cack cada cadc cadd cadi caia caib caic caid caik caka caza cbac cbbc cbca cbcc cbdb cbdc cbdi cbia cbid cbka ccaa ccab ccac ccad ccai ccba ccbc ccca cccb cccc ccci ccdc ccdi ccic ccid ccii cdaa cdac cdad cdai cdba cdda cddb cdic cdii cdza ciaa ciak ciba cibc cibi cica cicc cici cida cidc cidi ciia ciid ciii cika ciza ckac ckbc ckbi ckck daab daad daba dabb daca daci dada dadi daia daid daik daka daki dazz dbcc dcbc dcca dccb dccc dcci dcdb dcia dcii dddd dia- diab diac diad diak diaz diba dibb dica dici dick dida didi diii dika diki dizi dizz dkba dkdc dkid dzbb dzca dzik dzki iaaa iaac iaai iaba iaca iacc iadb iadc iaia ibac ibad ibca ibia ibid icaa icab icac icad icai icbc icbd icca iccb iccc icci icdc icdd idad idca idda idia idic idid iiac iica iicd iida iiii ikid ikki izak izba izia izki k-ci k-id kaaa kaab kaai kaak kaba kabb kabc kabd kabi kabz kacb kacc kacd kaci kacz kad- kada kadd kadi kadz kaia kaib kaic kaid kaii kaik kaiz kaka kakc kaki kakk kaza kazc kazd kazi kazz kbaa kbab kbac kbad kbai kbak kbaz kbba kbbb kbbc kbbd kbbi kbbk kbbz kbca kbcb kbci kbck kbcz kbdb kbdi kbdz kbia kbib kbic kbid kbik kbiz kbkb kbkk kbkz kbzc kbzd kbzi kbzz kcaa kcab kcac kcad kcai kcba kcbc kcbd kcbi kcbk kcca kccb kccc kccd kcci kcck kcda kcdc kcdd kcdi kcdz kcic kcid kcii kckc kckk kckz kczz kdaa kdab kdac kdad kdai kdak kdaz kdbb kdbi kdca kdcc kdcd kddb kddc kddd kddi kddk kdia kdic kdiz kdka kdkb kdkd kdkk kdza kdzz kiab kiac kiad kiai kiba kibb kibc kibi kibz kica kicb kicc kicd kick kida kidb kidd kidi kidk kidz kiia kiic kiid kiii kiik kika kikc kikd kiki kikk kikz kizz kkaa kkac kkai kkba kkbb kkbd kkbi kkbz kkcb kkcd kkci kkck kkda kkdc kkdd kkdz kkia kkic kkid kkik kkkk kkzz kzaz kzbb kzbd kzbi kzbk kzbz kzcd kzdc kzia kzid kziz kzkz kzza kzzb kzzd kzzi kzzk kzzz zaba zabi zaca zack zada zaia zaid zaka zaki zakk zaza zazi zbik ziad ziak ziaz ziba zica zick zidi zika ziki ziza zizi zizz zzzz