a-ak aaaa aaab aaac aaal aaba aabb aabc aabl aaca aacb aacc aack aacl aaka aala aalc aall abaa abab abac abaj abak abal abb- abba abbb abca abcb abcc abcl abla ablj abza acaa acab acac acba acbl acca accc acla aclc ajab ajac ajak ajba ajka ajla akaa akal akca akka alaa alac alak alal alaz alb- alba albc alca alcc alk- alka alkb all- alla alll alza aza- azab azal azaz azca azja azlk azza baaa baak baal baaz baba babb bac- baca bacc back bacz baja bak- baka bakl bala balc balk ball baza bbbb bblb bcaa bcbc bcca bccc bccl bjcc blaa blab blac blaj blak blaz blkb bzzz caaa caab caac caal caba cac- caca cacc cack caja caka cala calc calk call caza cbac cbal cbbc cbca cbcc cbcl cbka cbkj cbkl cblb cblc ccaa ccab ccac ccba ccbc ccca cccb cccc cccl ccla cclc cjbc cjbk cjca cjcb cjcj cjcl ckac ckbc ckck ckcl clab jaak jaal jaba jaca jacc jack jacl jaja jaka jala jalc jazz jbaa jcbc jccc jjcc jlab kaaa kaab kaak kaal kaba kabb kabc kabz kacb kacc kacl kacz kaja kajb kajc kajk kajz kaka kakc kakj kakk kala kalb kalc kalk kall kalz kaza kazc kazz kbaa kbab kbac kbak kbal kbaz kbba kbbb kbbc kbbk kbbl kbbz kbca kbcb kbck kbcl kbcz kbja kbjc kbjk kbkb kbkk kbkl kbkz kbla kblb kblj kbll kblz kbzc kbzz kcaa kcab kcac kcal kcba kcbc kcbk kcbl kcca kccb kccc kcck kccl kcjb kcjc kcjj kcjk kcjz kckc kckj kckk kckl kckz kcla kclc kclk kcll kclz kczz kjaa kjac kjak kjal kjaz kjbb kjbl kjbz kjcb kjcc kjck kjjj kjjk kjjl kjjz kjkj kjkk kjla kjll kjza kjzz kkaa kkac kkal kkba kkbb kkbj kkbl kkbz kkcb kkcj kkck kkcl kkjb kkjk kkjl kkjz kkkj kkkk kklb kklc kkll kklz kkzz klaa klab klac klaj klak klal klaz klbb klbc klbj klbl klca klcb klcc klck klcl klcz klja kljb kljz klka klkc klkk klkl klla kllb kllc kllk klza klzk klzz kzal kzaz kzbb kzbj kzbk kzbl kzbz kzcl kzjb kzjk kzjl kzjz kzkz kzla kzlb kzlk kzlz kzza kzzb kzzj kzzk kzzz laaa laac laaj laak laal laba laca lacc lack lacl laja laka lala lall laza lbcc lcac lcbc lcca lccc ljla lkab lkal llcc lllc llll lzjb zaal zaba zaca zack zajc zajk zaka zakk zal zala zalk zaza zzaj zzzz