a-ak a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aabt aaca aacb aacc aaci aack aacr aact aaib aaic aaii aaka aara aarc aari aart aata aatc aatk aatt abaa abab abac abai abak abar abat abb- abba abbb abbi abbr abbt abca abcb abcc abci abcr abct abia abib abic abir abit abra abrc abri abta ac-t acaa acab acac acai acar acat acba acca accc acci acct aci- acia acic acir acr- acra acrc acri acrr acta actc acti actt aiai aiba aica aicc aicr aiia aiib aiic aiir aika aiki aira airi airt aita aiti aitr aitt akaa akai akar akca akia akik akir akka akki akr- akra arab arac arai arak arar arat arba arbi arc- arca arci arct aria arib arii arik arit arka arki arr- arra arrc arri arrk arrr arrt arta artc arti artr at-t ataa atab atac atai atak atar atat atca atcc atck atcr atia atic atik atit atka atkt atra atrc atri atrk atta atti attr ba-i baaa baak baar baat baba babb babi babr bac- baca bacc baci back bact baia baib baic baik bair bait bak- baka baki bakr bakt bar- bara barb barc bari bark barr bart bata batc bati batt bbbb bbci bbrc bcaa bcar bcat bcbc bcca bccc bcci bcia bcit bcra bctc biak biar biat biba bibb bibi bica bicc bici bick bira birb biri birk birr birt bita bitc bitt brab brac brai brak brat brca brcb bria bric brik brit brka brkb brrr brtc btaa btcc btrc btrt bttb caaa caab caac caat caba cabi cac- caca cacc caci cack cacr caia caib caic caik cair cait caka cara carb carc cari cark carr cart cat- cata catb catc cati catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbia cbir cbit cbka cbkr cbrt cbta cbtc ccaa ccab ccac ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccic ccii ccir ccra ccrc ccri ccrt cctb cctc cctt ciaa ciak ciar ciat ciba cibc cibi cica cicc cici cicr cict ciia ciii ciit cika cikr cira cirb circ ciri cirk cirr cirt cita citb citi citt ckac ckat ckbc ckbi ckck ckrc cktb crab crac crai crar crat crbc crca crcc crcr cria crib cric crik crit crkc crrt crtc ctab ctba ctbi ctca ctia ctic ctrc ctta iaaa iaac iaai iaat iaba iaca iacc iacr iact iaia iara iarc iart iata iatc iati ibac ibar ibat ibca ibia ibra ibrc ibri ibtb ibtc icaa icab icac icai icar icat icbc icca iccb iccc icci iccr icct icra icrc icrr icrt icta iiac iica iiii iiit iira iirc iita iitr iitt ikar ikat ikki ikra ikri irac irai irak irar irca ircc iri- iria iric irka irki irra irrc irri irta irti itaa itac itai itak itar itat itia itic itra itri itta k-ci kaaa kaab kaai kaak kaar kaat kaba kabb kabc kabi kabr kacb kacc kaci kact kaia kaib kaic kaii kaik kair kait kaka kakc kaki kakk kakt kara karb kari kark karr kart kat- kata katb katc kati katk katr katt kbaa kbab kbac kbai kbak kbar kbat kbba kbbb kbbc kbbi kbbk kbbr kbbt kbca kbcb kbci kbck kbcr kbct kbia kbib kbic kbik kbit kbkb kbkk kbkr kbra kbrb kbrc kbri kbrk kbrt kbta kbtb kbtc kbtk kbtr kbtt kcaa kcab kcac kcai kcar kcat kcba kcbc kcbi kcbk kcbr kcca kccb kccc kcci kcck kccr kcct kcic kcii kcir kcit kckc kckk kckr kcrc kcri kcrr kcrt kcta kctb kctc kcti kiab kiac kiai kiar kiba kibb kibc kibi kibr kibt kica kicb kicc kick kicr kict kiia kiic kiii kiik kiit kika kikc kiki kikk kikr kikt kira kirb kirc kiri kirk kirr kirt kita kitc kiti kitr kitt kkaa kkac kkai kkar kkat kkba kkbb kkbi kkbr kkbt kkcb kkci kkck kkcr kkct kkia kkic kkik kkit kkkk kkrb kkrc kkrk kkrr kkrt kktc kktk krab krac krai krak krar krat krba krbb krbi krbk krbr krbt krca krcb krcc krci kria krib krik krit krka krkc krki krkk krkr krrb krrc krri krrk krrr krrt krta krtc krti krtk krtr ktaa ktai ktak ktar ktat ktba ktbb ktbc ktbr ktbt ktcc ktck ktcr ktia ktib ktic ktik ktkb ktkc ktkk ktkr ktkt ktrb ktrc ktri ktrk ktrr ktrt kttc ktti kttk kttr kttt raab raak raat raba rabb rabi rabk rac- raca racc raci rack ract raia raic raii raik rair rait raka raki rakk rakt rara rarb rari rark rata rati ratk ratt rbbb rbbr rcac rcbc rccb rccc rcic rctc rcti riaa riab riai riak riat rib- riba rica ricc rick rict riia rika riki rikk riri rita riti ritt rrat rrrr rtai rtca rtcc taa- taar taat taba tabb tabc tabi taca tacc taci tack tact taia taik tair tait taka taki takk takt tara tarb tarc tari tark tarr tart tata tatb tati tatr tatt tbar tbca tbcb tbcc tbit tbrb tbta tcca tccc tctc tiaa tiab tiar tiba tibi tica ticc tick tiit tika tiki tira tirb tiri tirr tita titc titi titt tkac traa trab trac trai trak trat trca trcc tri- tria trib tric trik trit trra trtc trtr ttab ttbb tttt