-al -ol a-a a-b a-c aaa aab aac aaf aaj aak aal aao ab- aba abb abc abf abj abk abl abo ac- aca acb acc acf acj ack acl aco af- afa afb afc aff afj afk afl afo aja ajb ajc ajf ajj ajk ajl ajo aka akb akc akj akk akl ako al- ala alb alc alf alj alk all alo aoa aob aoc aof aoj aok aol aoo baa bab bac baf baj bak bal bao bba bbb bbc bbf bbk bbl bbo bca bcb bcc bcf bcj bck bcl bco bfa bfb bfc bff bfj bfl bfo bja bjc bjf bjj bjk bka bkb bkc bkf bkk bkl bko bla blb blc blf blj blk bll blo boa bob boc bof boj bok bol boo c-- c-j caa cab cac caf caj cak cal cao cba cbb cbc cbf cbj cbk cbl cbo cca ccb ccc ccf ccj cck ccl cco cfa cfb cfc cff cfk cfl cfo cja cjb cjc cjf cjk cka ckb ckc cko cl- cla clb clc clf clj clk cll clo co- coa cob coc cof coj cok col coo faa fab fac faf faj fak fal fao fba fbb fbc fbf fbk fbl fbo fca fcb fcc fcf fcj fck fcl fco ffa ffc fff ffk ffl ffo fja fjb fjc fka fkb fkc fkf fkj fkk fkl fla flb flc flf fll flo foa fob foc fof fok fol foo jaa jab jac jaf jaj jak jal jao jba jbc jbf jbj jbk jbl jbo jca jcb jcc jcf jck jcl jco jfa jfb jfc jff jfj jfk jfl jfo jja jjb jjc jjf jjj jjk jjl jka jkb jkk jkl jko jla jlb jlc jlf jll jlo joa job joc jof joj jok jol joo ka- kaa kab kac kaf kaj kak kal kao kba kbb kbc kbf kbk kbl kbo kca kcb kcc kck kcl kfa kfc kff kfo kjb kjc kkb kkc kkk kkl kl- kla klb klc klf klo koa kob koc kof kok kol koo la- laa lab lac laf laj lak lal lao lba lbb lbc lbf lbj lbk lbl lbo lca lcb lcc lcf lcj lck lcl lco lfa lfb lfc lff lfk lfl lfo ljf ljj lka lkb lkl lla llb llc llf llj llk lll llo loa lob loc lof loj lok lol loo oaa oab oac oaf oaj oak oal oao ob- oba obb obc obf obj obk obl obo oc- oca ocb occ ocf ocj ock ocl oco of- ofa ofb ofc off ofl ofo oja ojb ojc ojo oka okb okc okj okk okl oko ola olb olc olf olk oll olo oo- ooa oob ooc oof ook ool ooo

a-ak a-ok aaaa aaab aaac aaaf aaal aaba aabb aabc aabl aaca aacb aacc aacf aack aacl aaco aafa aafb aafc aaff aafl aaka aala aalc aall aalo aaoo abaa abab abac abaf abaj abak abal abb- abba abbb abbo abca abcb abcc abcf abcl abff abla ablj ablo aboa abob abof abok abol aboo acaa acab acac acba acbl acca accc accf acco acfc acfl acla aclc acoa acol afaa afak afao afca afcb afcc affa affc affo afka afla aflc afoa afol afoo ajab ajac ajak ajao ajba ajka ajkf ajla ajob ajoo akaa akal akao akca akka akko aklo akok alaa alac alak alal alao alb- alba albc albo alca alcc alco alfa alk- alka alkb alko all- alla alll allo aloa aloc alof alok alol aloo aoba aoca aola baaa baaf baak baal baba babb babo bac- baca bacc back baco bafc baff bafo baja bak- baka bakl bako bala balc balf balk ball balo baol bbbb bbfc bblb bcaa bcbc bcca bccc bccl bcfc bcof bfca bffl bjcc bjoa blaa blab blac blaj blak blfc blkb blob bloc blok bloo boab boac boak boal boba bobb bobo boca bock boco bofa boff bojo boka boko bola bolk boll bolo boob booc boof book bool c-bo caaa caab caac caaf caal caba cabf cabo cac- caca cacc cack caco cafa cafb cafc caff cafl caja caka cala calc calf calk call calo caol cbac cbal cbbc cbca cbcc cbcl cbfb cbfc cbka cbkj cbkl cbko cblb cblc cbol ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf cccl ccfa ccfc ccff ccfl ccjo ccla cclc ccob ccoc cfaa cfab cfac cfao cfbc cfca cfcb cfcf cfcl cfco cffb cfoa cjbc cjbk cjca cjcb cjcj cjcl cjfb cjfl cjlo cjob ckac ckbc ckck ckcl ckco cklf ckoa ckob ckoc ckoo clab claf clob clof clok cloo coak coal coba cobb cobo coca cock coco cofc coff cojo cok- coka coko col- cola colb colk coll colo coob coof cook cool f--k faaa faac faba fabo faca facc fack fafa fafc faff fafo faja fako fala falc falk fall falo fbla fcab fcal fcba fcca fccf fccj ffcc ffff fjca fkab flab flac flak flao flcl flob floc flok floo foaf foak foal foba foca focj fock foco fofo fola folc folk foll folo foof fook fool jaaf jaak jaal jaba jabo jaca jacc jack jacl jaco jafa jafc jaff jaja jaka jako jala jalc jbaa jbob jcbc jccc jjcc jklf jlab joab joal joao joba jobo joca jock joco jofa jojo joka jokb jola jolf joll jolo joof jook jool k-lo kaaa kaab kaaf kaak kaal kaba kabb kabc kabf kabo kacb kacc kacl kaco kafa kafc kaff kaja kajb kajc kajk kajo kaka kakc kakj kakk kako kala kalb kalc kalf kalk kall kalo kaoa kaoc kaok kaol kbaa kbab kbac kbak kbal kbba kbbb kbbc kbbf kbbk kbbl kbbo kbca kbcb kbck kbcl kbco kbfb kbfc kbff kbfk kbfl kbfo kbja kbjc kbjk kbkb kbkf kbkk kbkl kbko kbla kblb kblf kblj kbll kblo kboa kbob kboc kbok kboo kcaa kcab kcac kcal kcba kcbc kcbf kcbk kcbl kcca kccb kccc kcck kccl kcfa kcfb kcfc kcfj kcfl kcfo kcjb kcjc kcjf kcjj kcjk kckc kckf kckj kckk kckl kcko