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 abak abal abax abb- abba abbb abbo abca abcb abcc abcl abla ablo aboa abob abok abol aboo abox acaa acab acac acba acbl acca accc acco acla aclc acoa acol 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 alxa aoba aoca aola axal axo- axoa axxo ba-x baaa baak baal baba babb babo bac- baca bacc back baco bak- baka bakl bako bala balc balk ball balo baol bbbb bblb bbox bcaa bcbc bcca bccc bccl blaa blab blac blak blkb blob bloc blok bloo boab boac boak boal boba bobb bobo boca bock boco boka boko bola bolk boll bolo boob booc book bool boox boxa c-bo caaa caab caac caal caba cabo cac- caca cacc cack caco caka cala calc calk call calo calx caol caxa cbac cbal cbax cbbc cbca cbcc cbcl cbka cbkl cbko cblb cblc cbol cbox cbxa ccaa ccab ccac ccba ccbc ccca cccb cccc cccl ccla cclc cclx ccob ccoc ccxl ckac ckbc ckbx ckck ckcl ckco ckcx ckoa ckob ckoc ckoo clab clob clok cloo clox clxx coak coal coax coba cobb cobo coca cock coco cok- coka coko col- cola colb colk coll colo coob cook cool coxa cxxx k-lo kaaa kaab kaak kaal kaba kabb kabc kabo kacb kacc kacl kaco kaka kakc kakk kako kakx kala kalb kalc kalk kall kalo kalx kaoa kaoc kaok kaol kaox kaxa kaxl kbaa kbab kbac kbak kbal kbba kbbb kbbc kbbk kbbl kbbo kbca kbcb kbck kbcl kbco kbkb kbkk kbkl kbko kbla kblb kbll kblo kboa kbob kboc kbok kboo kbox kbxb kbxl kbxx kc-x kcaa kcab kcac kcal kcba kcbc kcbk kcbl kcbx kcca kccb kccc kcck kccl kckc kckk kckl kcko kckx kcla kclc kclk kcll kclx kcob kcol kcox kcxl kkaa kkac kkal kkba kkbb kkbl kkbo kkcb kkck kkcl kkco kkkk kklb kklc kkll kklo kklx kkoa kkob kkol kkoo kkxa kkxk kkxl kkxx klaa klab klac klak klal klax klbb klbc klbl klca klcb klcc klck klcl klcx klka klkc klkk klkl klko klkx klla kllb kllc kllk kloa klob kloc klok klol kloo klox klxk klxx koab koac koak koal koba kobb kobc kobk kobo koca kocb kock koka kokb kokc kokk koko kokx kola kolb kolc kolk koll kolo koob kooc kook kool kooo koxc kxaa kxac kxba kxbl kxbx kxca kxcl kxkc kxkk kxkx kxla kxlb kxlc kxll kxlo kxlx kxoa kxok kxol kxoo kxox kxxk kxxl kxxo kxxx laaa laac laak laal laax laba labo laca lacc lack lacl laco laka lala lall lalo laxa laxo lbcc lcac lcbc lcca lccc lkab lkal llao llcc lllc llll lloa lloc lloo loac lob- loba lobb lobo loca locc lock loco loka lokk loko lola loll lolo loob looc look lool lox- loxa loxo lxxx oall obak obal obba obbo obkb obla obok obol obox ocab ocac ocak ocal ocbc occa occc oclc okak okka okko okla oklo okok okol olac olax olba olbo olca olcc olka olla ollo ooaa ooak ooba oola oolo oooo oxa- oxal oxo- oxox oxxo xacl xala xall xbox xcal xcbl xloc xlox xobc xoca xoco xoka xolo xoxo xxxo xxxx