a-a a-b a-c aaa aab aac aaj aak aao aar aav ab- aba abb abc abj abk abo abr abv ac- aca acb acc acj ack aco acr acv aja ajb ajc ajj ajk ajo ajr aka akb akc akj akk ako akr akv aoa aob aoc aoj aok aoo aor aov ar- ara arb arc arj ark aro arr arv av- ava avb avc avk avo avr baa bab bac baj bak bao bar bav bba bbb bbc bbk bbo bbr bca bcb bcc bcj bck bco bcr bcv bja bjc bjj bjk bjr bka bkb bkc bkk bko bkr bkv boa bob boc boj bok boo bor bov bra brb brj brk bro brr brv bva bvb bvc bvk bvo bvr bvv c-- c-j caa cab cac caj cak cao car cav cba cbb cbc cbj cbk cbo cbr cbv cca ccb ccc ccj cck cco ccr ccv cja cjb cjc cjk cjr cka ckb ckc cko co- coa cob coc coj cok coo cor cov cra crb crc crj crk cro crr crv cva cvb cvc cvk cvo cvr cvv jaa jab jac jaj jak jao jar jav jba jbc jbj jbk jbo jbr jca jcb jcc jck jco jcr jja jjb jjc jjj jjk jjr jka jkb jkk jko jkr jkv joa job joc joj jok joo jor jra jrb jrc jrk jro jrr jvb jvc ka- kaa kab kac kaj kak kao kar kav kba kbb kbc kbk kbo kbr kca kcb kcc kck kcr kjb kjc kjr kkb kkc kkk kkr kkv koa kob koc kok koo kor kra krc krk kro krr krv kva kvb kvk kvo kvr kvv oaa oab oac oaj oak oao oar oav ob- oba obb obc obj obk obo obr obv oc- oca ocb occ ocj ock oco ocr ocv oja ojb ojc ojo oka okb okc okj okk oko okr oo- ooa oob ooc ook ooo oor oov or- ora orb orc ork oro orr orv ov- ova ovb ovc ovo ovv ra- raa rab rac raj rak rao rar rav rba rbb rbc rbk rbo rbr rca rcb rcc rcj rco rcr rcv rja rjc rjk rjr rkb rkc rkk rko rkv roa rob roc roj rok roo ror rov rra rrb rrc rrk rrr rva rvb rvc rvo rvr rvv v-a vaa vab vac vaj vak vao var vav vba vbc vbk vbo vbr vbv vca vcc vco vcr vja vka vkb voa vob voc vok voo vor vov vra vrb vrc vrk vrr vva vvb vvc vvo vvr vvv

-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