a-ak a-ok aaaa aaab aaac aaar aaba aabb aabc aaca aacb aacc aack aaco aacr aaka aaoo aara aarc aaro abaa abab abac abag abak abar abb- abba abbb abbo abbr abca abcb abcc abcr aboa abob abok aboo abor abra abrc abro abza acaa acab acac acag acar acba acca accc acco acga acgr acoa acog acor acr- acra acrc acro acrr ag-o agac agag agao agar agaz agba agbo agca agcc agco agga agob agog agoo agoz agra agro akaa akao akar akca akka akko akok akr- akra aoba aoca aora aorb arab arac arag arak arar arba arc- arca arco arga argb argo arka arko aroa arob aroo aror aroz arr- arra arrc arrg arrk arro arrr arza arzo aza- azab azar azaz azca azo- azog azoo azor azra azza azzo baaa baak baar baaz baba babb babo babr bac- baca bacc back baco bacz baga bagg bago bak- baka bako bakr bar- bara barb barc barg bark baro barr barz baza bazo bbbb bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcor bcoz bcra bgca boab boac boag boak boar boaz boba bobb bobo boca bock boco boga bogg bogo boka boko boob booc boog book boor booz bor- bora borg bork boro borr borz boza bozo brab brac brag brak brao braz brca brcb brka brkb broa brob broc brog brok broo bror broz brrr brza bzrk bzzz c-bo caaa caab caac caba cabg cabo cac- caca cacc cack caco cacr caga cagg cago cagr cagz caka caor caoz cara carb carc cark caro carr caza cazo cbac cbar cbbc cbca cbcc cbcr cbga cbgb cbka cbkg cbko cbkr ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc ccga ccgc ccob ccoc ccra ccrc ccrg cgac cgcc cgcg cgro ckac ckbc ckck ckco ckga ckgo ckoa ckob ckoc ckoo ckor ckrc coag coak coba cobb cobo coca cock coco cogo cok- coka coko coob cook cor- cora corb corc corg cork coro corr cozz crab crac crag crar crbc crca crcc crcr crcz crkc crob croc crok croo cror croz czar gaar gaba gabb gabo gabr gabz gack gacz gaga gagg gago gara garb garg garo garr garz gaza gbag gbbo gc-c gcaa gcbc gccc gcoa gcrg gggg goar goba gobo goca gocr goga gogo goog gook goor gora gorb gorg goro gorr gorz goza gozo grab grac graz grbr grcc grob groc grog grok groo gror grrr kaaa kaab kaag kaak kaar kaba kabb kabc kabg kabo kabr kabz kacb kacc kaco kacz kag- kaga kagb kagc kagg kago kagr kagz kaka kakc kakk kako kaoa kaoc kaog kaok kaor kara karb karg kark karo karr karz kaza kazc kazg kazo kazr kazz kbaa kbab kbac kbak kbar kbaz kbba kbbb kbbc kbbg kbbk kbbo kbbr kbbz kbca kbcb kbck kbco kbcr kbcz kbga kbgb kbgg kbgo kbgr kbgz kbkb kbkg kbkk kbko kbkr kbkz kboa kbob kboc kbok kboo kboz kbra kbrb kbrc kbrg kbrk kbro kbrz kbzc kbzo kbzz kcaa kcab kcac kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcgc kcgr kckc kckk kcko kckr kckz kcob kcog kcor kcoz kcrc kcrg kcro kcrr kcrz kczo kczz kgab kgac kgak kgba kgbb kgbc kgbr kgcb kgcc kgcr kgga kggg kggo kggr kgor kgoz kgra kgrb kgrc kgrg kgrk kgro kgrr kgrz kkaa kkac kkag kkar kkba kkbb kkbg kkbo kkbr kkbz kkcb kkck kkco kkcr kkgb kkgo kkgr kkkk kkoa kkob kkoo kkor kkoz kkrb kkrc kkrk kkro kkrr kkrz kkzz koab koac koak koar koaz koba kobb kobc kobk kobo kobr koca kocb kock koga kogb kogg kogo koka kokb kokc kokk koko kokr kokz koob kooc koog kook kooo koor kooz kora korb korc korg kork koro korr koza kozb kozk kozo kozr krab krac krag krak krar kraz krba krbb krbg krbk krbr krbz krca krcb krcc krcg krco krka krkc krkk krko krkr krkz kroa krob kroc krog krok kroo kror kroz krrb krrc krrg krrk krro krrr krrz krza krzk krzr krzz kzar kzaz kzbb kzbg kzbk kzbr kzbz kzcr kzgo kzgz kzkr kzkz kzoo kzor kzoz kzrb kzrc kzrg kzrk kzro kzrr kzrz kzza kzzb kzzk kzzo kzzr kzzz oara obak obba obbo obkb obok obor obra obro ocab ocac ocak ocbc occa occc ocga ocra ocro ocrr ogar ogb ogba ogoa ogog ogra ogro okak okaz okgo okka okko okok okor okra okro ooaa ooak ooba oocr oooo oora orab orac orak orao orar orba orbb orbo orca orco orga orgo orka orko oro- orok oror oroz orra orro orzk orzo ozar ozga raab raag raak raaz raba rabb rabk rabo rac- raca racc rack raco raga ragg rago raka rakk raob raoc raok rara rarb rark raro rarz raza razg razo razr razz rbbb rbbr rcac rcbc rcbo rccb rccc rcga rcgc rcrg rgba roab roag roak roar rob- roba robb robo roca rocc rock roco roga rogg rogo roka rokk roko rokr roob roog rook roor rooz rora rorc rork roro roza rozz rrrr rzab rzka z-ro zaar zaba zabo zabr zaca zack zagg zago zaka zakk zara zarb zark zaro zarr zaza zbar zcar zcgk zgba zoar zobo zoco zogg zogo zoo- zook zora zorb zorc zorg zork zoro zoza zozo zzzz