-vac a-ak a-ok aaaa aaab aaac aaar aaav aaba aabb aabc aaca aacb aacc aack aaco aacr aacv aaka aaoo aara aarc aaro aava abaa abab abac abaj abak abar abb- abba abbb abbo abbr abca abcb abcc abcr aboa abob abok aboo abor abov abra abrc abro abva acaa acab acac acar acba acca accc acco acoa acor acr- acra acrc acro acrr acrv acvv ajab ajac ajak ajao ajar ajba ajka ajob ajoo akaa akao akar akca akka akko akok akr- akra aoba aoca aora aorb arab arac arak arar arba arc- arca arco arja arjo arka arko aroa arob aroo aror arr- arra arrc arrk arro arrr arva arvo avab avaj avao avar avcc avco avor avra avro avva avvo baaa baak baar baba babb babo babr bac- baca bacc back baco baja bak- baka bako bakr bar- bara barb barc bark baro barr bava bbbb bbrc bcaa bcar bcbc bcca bccc bcor bcra bcvo bjcc bjoa boab boac boak boar boba bobb bobo boca bock boco bojo boka boko boob booc book boor bor- bora borj bork boro borr bova bovo brab brac braj brak brao brav brca brcb brka brkb broa brob broc brok broo bror brrr c-bo caaa caab caac caba cabo cac- caca cacc cack caco cacr caja caka caor cara carb carc carj cark caro carr cava cavo cbac cbar cbbc cbca cbcc cbcr cbka cbkj cbko cbkr cbrj cbva cbvb cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccv ccjo ccob ccoc ccra ccrc ccvo cjar cjbc cjbk cjca cjcb cjcj cjkv cjob cjor cjrb cjrc cjrj cjvb ckac ckbc ckck ckco ckcv ckjr ckjv ckoa ckob ckoc ckoo ckor ckrc ckvo coak coba cobb cobo coca cock coco cojo cok- coka coko coob cook cor- cora corb corc cork coro corr cova covo crab crac craj crar crbc crca crcc crcr crkc crob croc crok croo cror cvac cvar cvca cvcc cvra cvrr j-ro jaak jaar jaba jabo jabr jaca jacc jack jaco jaja jaka jako jara jarc jark jaro jarr java jbaa jbar jbob jcbc jccc jcrc jjar jjcc joab joao joar joba jobo joca jock joco jojo joka jokb jook joor jora jork joro jova jovo jrbr kaaa kaab kaak kaar kaba kabb kabc kabo kabr kacb kacc kaco kacv kaja kajb kajc kajk kajo kajr kaka kakc kakj kakk kako kaoa kaoc kaok kaor kara karb karj kark karo karr karv kava kavb kavo kavv kbaa kbab kbac kbak kbar kbba kbbb kbbc kbbk kbbo kbbr kbca kbcb kbck kbco kbcr kbja kbjc kbjk kbkb kbkk kbko kbkr kbkv kboa kbob kboc kbok kboo kbov kbra kbrb kbrc kbrj kbrk kbro kbrv kbva kbvb kbvc kbvo kbvr kcaa kcab kcac kcar kcav kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kccv kcjb kcjc kcjj kcjk kckc kckj kckk kcko kckr kckv kcob kcor kcrc kcro kcrr kcrv kcvj kcvk kcvo kcvr kcvv kjaa kjac kjak kjav kjbb kjbr kjcb kjcc kjck kjcr kjcv kjjj kjjk kjjo kjjr kjkj kjkk kjoc kjoj kjok kjor kjrb kjrc kjrv kjvc kjvv kkaa kkac kkar kkba kkbb kkbj kkbo kkbr kkcb kkcj kkck kkco kkcr kkjb kkjk kkkj kkkk kkoa kkob kkoj kkoo kkor kkov kkrb kkrc kkrk kkro kkrr kkrv kkvr kkvv koab koac koak koar koba kobb kobc kobk kobo kobr koca kocb kock koja kojb kojo koka kokb kokc kokk koko kokr koob kooc kook kooo koor koov kora korb korc kork koro korr korv kova kovc kovk kovo kovr krab krac kraj krak krar krav krba krbb krbk krbr krca krcb krcc krco krjb krjc krjk krjo krka krkc krkk krko krkr krkv kroa krob kroc krok kroo kror krov krrb krrc krrk krro krrr krva krvb krvc krvk krvo krvr krvv kvab kvak kvar kvbc kvbr kvcb kvcc kvck kvco kvcr kvcv kvoa kvob kvoc kvok kvoo kvor kvov kvra kvrc kvro kvrr kvrv kvvr kvvv oara obak obba obbo obja obkb obok obor obra obro ocab ocac ocak ocbc occa occc ocra ocro ocrr ojak ojok okak okja okka okko okok okor okra okro ooaa ooak ooba oocr oooo oora orab orac orak orao orar orav orba orbb orbo orca orco orka orko oro- orok oror orra orro orvr ovar ovo- ovoo ovra raab raaj raak raba rabb rabk rabo rac- raca racc rack raco racv raja rajo raka rakk raob raoc raok rara rarb rark raro rava rbbb rbbr rcac rcbc rcbo rccb rccc rcvr roab roak roar rob- roba robb robo roca rocc rock roco roja rojo roka rokk roko rokr roob rook roor rora rorc rork roro rova rovo rrrr rv-c rvca vaar vaca vack vaco vaja vajk vaka vara vark varr vava vbcc vjaa vkor voar voca voka vooc voor vor- vora voro vovk vrac vrak vrav vrba vroc vvob vvvv