a-a a-b a-c aaa aab aac aak aan aao aav ab- aba abb abc abk abn abo abv ac- aca acb acc ack acn aco acv aka akb akc akk akn ako akv an- ana anb anc ank ann ano anv aoa aob aoc aok aon aoo aov av- ava avb avc avk avn avo baa bab bac bak ban bao bav bba bbb bbc bbk bbn bbo bca bcb bcc bck bcn bco bcv bka bkb bkc bkk bkn bko bkv bna bnb bnc bnk bnn bno bnv boa bob boc bok bon boo bov bva bvb bvc bvk bvn bvo bvv c-- caa cab cac cak can cao cav cba cbb cbc cbk cbn cbo cbv cca ccb ccc cck ccn cco ccv cka ckb ckc cko cn- cna cnb cnc cnn cno cnv co- coa cob coc cok con coo cov cva cvb cvc cvk cvn cvo cvv ka- kaa kab kac kak kan kao kav kba kbb kbc kbk kbn kbo kca kcb kcc kck kcn kkb kkc kkk kkn kkv kn- kna knc knk knn kno koa kob koc kok kon koo kva kvb kvk kvn kvo kvv naa nab nac nak nan nao nav nba nbb nbc nbk nbn nbo nbv nca ncb ncc nck ncn nco ncv nka nkc nkk nkn nko nna nnb nnc nnk nnn nno nnv no- noa nob noc nok non noo nov nva nvb nvc nvk nvn nvv oaa oab oac oak oan oao oav ob- oba obb obc obk obn obo obv oc- oca ocb occ ock ocn oco ocv oka okb okc okk oko on- ona onb onc onk onn ono oo- ooa oob ooc ook oon ooo oov ov- ova ovb ovc ovo ovv v-a vaa vab vac vak van vao vav vba vbc vbk vbo vbv vca vcc vcn vco vka vkb vn- vna vno vnv voa vob voc vok von voo vov vva vvb vvc vvo vvv

-ana -vac a-ak a-ok aaaa aaab aaac aaan aaav aaba aabb aabc aaca aacb aacc aack aacn aaco aacv aaka aana aaon aaoo aava abaa abab abac abak aban abb- abba abbb abbo abca abcb abcc abcn aboa abob abok abon aboo abov abva acaa acab acac acan acba acca accc acco acoa acon acvv akaa akan akao akca akka akko akna akok akon ana- anaa anab anac anak anan anao anba anbb anbo anca ancc anco ank- anka anko anna annb anno ano- anoa anon aoba aoca aonb aono avab avan avao avcc avco avon avva avvo baaa baak baan baba babb babo bac- baca bacc back bacn baco bak- baka bako bana banc bank bann bano baon bava bbbb bcaa bcbc bcca bccc bcvo bnoc boab boac boak boan boba bobb bobo boca bock boco boka bokn boko bona bonc bonk bonn bono boob booc book boon bova bovo c-bo caaa caab caac caan caba cabo cac- caca cacc cack caco caka cana canc cank cann cano cava cavo cbac cbbc cbca cbcc cbcn cbka cbkn cbko cbna cbva cbvb cbvn ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc cccv ccna ccnb ccnc ccob ccoc ccvo ckac ckan ckbc ckck ckco ckcv cknb cknc ckoa ckob ckoc ckoo ckvo cnaa cnac cnbc cnco cnna coak coan coba cobb cobo coca cock coco cok- coka coko con- cona conc conk conn cono conv coob cook coon cova covo cvac cvca cvcc kaaa kaab kaak kaan kaba kabb kabc kabo kacb kacc kaco kacv kaka kakc kakk kakn kako kana kanb kann kano kanv kaoa kaoc kaok kaon kava kavb kavo kavv kbaa kbab kbac kbak kbba kbbb kbbc kbbk kbbo kbca kbcb kbck kbco kbkb kbkk kbko kbkv kbna kbnn kbno kbnv kboa kbob kboc kbok kbon kboo kbov kbva kbvb kbvc kbvo kcaa kcab kcac kcav kcba kcbc kcbk kcca kccb kccc kcck kccv kckc kckk kckn kcko kckv kcnb kcno kcnv kcob kcon kcvk kcvo kcvv kkaa kkac kkan kkba kkbb kkbn kkbo kkcb kkck kkcn kkco kkkk kknb kknn kkno kkoa kkob kkon kkoo kkov kkvv knaa knab knac knan knba knbb knbc knbn knca kncb knck kncn knco knkk knnb knnk knob knoc knok knon knva knvn knvo koab koac koak koan koba kobb kobc kobk kobn kobo koca kocb kock kocn koka kokb kokc kokk kokn koko kona konc konk kono koob kooc kook koon kooo koov kova kovc kovk kovo kvab kvak kvan kvbc kvcb kvcc kvck kvco kvcv kvna kvnc kvnn kvno kvoa kvob kvoc kvok kvon kvoo kvov kvvn kvvv naaa naab naac naan naba nabc nabk nabo naca nacc nack naco naka nako nan- nana nanb nann nano naoc nava navo navv nbaa nbak nbbc nbbo nbca nbcc nbco ncaa ncac ncba ncbc ncca nccc nccn ncna ncnc ncoa ncoc nkok nnnn noaa noac noak noba nobc nobo nock noco noko non- nona nonn nono noo- noob nook noon nooo noov nov- nova novo nvcc obak oban obba obbo obkb obok obon ocab ocac ocak ocan ocbc occa occc occn ocna ocon okak okan okka okko okna okno okok okon onab onan onc- onca onco onna onno onon ooaa ooak ooba oona oooo ovan ovo- ovon ovoo vaan vaca vack vaco vaka vana vanc vank vann vano vava vbcc vcon vnav voca voka vona vonk vonn vooc vovk vvob vvvv

-aaa- aaaoc aabaa aabba aacbc aakko abaab ababa abaca aback abaco abaka abako abana abanc abank abann abano abaon abava abbac abban abcan abccc abkoo abnak aboab abobo abona abono abook aboon abovo acaca acacb acack acana acock acook akaba akabo akana akaoa akban akobo akoka akoko akona akono akova anaba anack anaco anaka anana anava anban ancon ankaa annan anoak anoba anoka anona anono anoon anova anovo avana avanc avcon avoca baava babak baban babka baboo bacab bacao bacca bacco back- backa backn bacon bakan bakka bakoa bakon bakov banak banan banba banca banck banco banka banna banon banov bavan bavon bbook bcock bo-bo boaco boann boano bobac bobak boban bobko boboc bobok bobov