a-ak a-ok aaaa aaab aaac aaal aaba aabb aabc aabl aaca aacb aacc aack aacl aaco aaka aala aalc aall aalo aaoo abaa abab abac abaj abak abal abb- abba abbb abbo abca abcb abcc abcl abla ablj ablo aboa abob abok abol aboo acaa acab acac acba acbl acca accc acco acla aclc acoa acol ajab ajac ajak ajao ajba ajka ajla ajob ajoo akaa akal akao akca akka akko aklo akok alaa alac alak alal alao alb- alba albc albo alca alcc alco alk- alka alkb alko all- alla alll allo aloa aloc alok alol aloo aoba aoca aola baaa baak baal baba babb babo bac- baca bacc back baco baja bak- baka bakl bako bala balc balk ball balo baol bbbb bblb bcaa bcbc bcca bccc bccl bjcc bjoa blaa blab blac blaj blak blkb blob bloc blok bloo boab boac boak boal boba bobb bobo boca bock boco bojo boka boko bola bolk boll bolo boob booc book bool c-bo caaa caab caac caal caba cabo cac- caca cacc cack caco caja caka cala calc calk call calo caol cbac cbal cbbc cbca cbcc cbcl cbka cbkj cbkl cbko cblb cblc cbol ccaa ccab ccac ccba ccbc ccca cccb cccc cccl ccjo ccla cclc ccob ccoc cjbc cjbk cjca cjcb cjcj cjcl cjlo cjob ckac ckbc ckck ckcl ckco ckoa ckob ckoc ckoo clab clob clok cloo coak coal coba cobb cobo coca cock coco cojo cok- coka coko col- cola colb colk coll colo coob cook cool jaak jaal jaba jabo jaca jacc jack jacl jaco jaja jaka jako jala jalc jbaa jbob jcbc jccc jjcc jlab joab joal joao joba jobo joca jock joco jojo joka jokb jola joll jolo jook jool k-lo kaaa kaab kaak kaal kaba kabb kabc kabo kacb kacc kacl kaco kaja kajb kajc kajk kajo kaka kakc kakj kakk kako kala kalb kalc kalk kall kalo kaoa kaoc kaok kaol kbaa kbab kbac kbak kbal kbba kbbb kbbc kbbk kbbl kbbo kbca kbcb kbck kbcl kbco kbja kbjc kbjk kbkb kbkk kbkl kbko kbla kblb kblj kbll kblo kboa kbob kboc kbok kboo kcaa kcab kcac kcal kcba kcbc kcbk kcbl kcca kccb kccc kcck kccl kcjb kcjc kcjj kcjk kckc kckj kckk kckl kcko kcla kclc kclk kcll kcob kcol kjaa kjac kjak kjal kjbb kjbl kjcb kjcc kjck kjjj kjjk kjjl kjjo kjkj kjkk kjla kjll kjoc kjoj kjok kjol kkaa kkac kkal kkba kkbb kkbj kkbl kkbo kkcb kkcj kkck kkcl kkco kkjb kkjk kkjl kkkj kkkk kklb kklc kkll kklo kkoa kkob kkoj kkol kkoo klaa klab klac klaj klak klal klbb klbc klbj klbl klca klcb klcc klck klcl klja kljb klka klkc klkk klkl klko klla kllb kllc kllk kloa klob kloc klok klol kloo koab koac koak koal koba kobb kobc kobk kobo koca kocb kock koja kojb kojo koka kokb kokc kokk koko kola kolb kolc kolj kolk koll kolo koob kooc kook kool kooo laaa laac laaj laak laal laba labo laca lacc lack lacl laco laja lajo laka lala lall lalo lbcc lcac lcbc lcca lccc ljla lkab lkal llao llcc lllc llll lloa lloc lloo loac lob- loba lobb lobo loca locc lock loco loja lojo loka lokk loko lola loll lolo loob looc looj look lool oall obak obal obba obbo obja obkb obla obok obol ocab ocac ocak ocal ocbc occa occc oclc ojak ojal ojok okak okja okka okko okla oklo okok okol olac olba olbo olca olcc olka olla ollo ooaa ooak ooba oola oolo oooo