a-a a-b a-c a-t aaa aab aac aan aao aat aav ab- aba abb abc abn abo abt abv ac- aca acb acc acn aco act acv an- ana anb anc ann ano ant anv aoa aob aoc aon aoo aot aov at- ata atb atc atn ato att atv av- ava avb avc avn avo avt baa bab bac ban bao bat bav bba bbb bbc bbn bbo bbt bca bcb bcc bcn bco bct bcv bna bnb bnc bnn bno bnt bnv boa bob boc bon boo bot bov bta btb btc btn bto btt btv bva bvb bvc bvn bvo bvt bvv c-- caa cab cac can cao cat cav cba cbb cbc cbn cbo cbt cbv cca ccb ccc ccn cco cct ccv cn- cna cnb cnc cnn cno cnt cnv co- coa cob coc con coo cot cov cta ctb ctc ctn cto ctt ctv cva cvb cvc cvn cvo cvt cvv naa nab nac nan nao nat nav nba nbb nbc nbn nbo nbt nbv nca ncb ncc ncn nco nct ncv nna nnb nnc nnn nno nnt nnv no- noa nob noc non noo not nov nta ntb ntc ntn nto ntt ntv nva nvb nvc nvn nvt nvv oaa oab oac oan oao oat oav ob- oba obb obc obn obo obt obv oc- oca ocb occ ocn oco oct ocv on- ona onb onc onn ono ont oo- ooa oob ooc oon ooo oot oov ot- ota otb otc otn oto ott otv ov- ova ovb ovc ovo ovv taa tab tac tan tao tat tav tba tbb tbc tbn tbo tbt tbv tca tcb tcc tcn tco tct tcv tna tnb tnc tnn tno tnt to- toa tob toc ton too tot tov tta ttb ttc ttn tto ttt ttv tva tvb tvc tvn tvo tvt v-a vaa vab vac van vao vat vav vba vbc vbo vbv vca vcc vcn vco vct vn- vna vno vnv voa vob voc von voo vot vov vta vtb vtc vto vtt vtv vva vvb vvc vvo vvt vvv

-ana -vac aaaa aaab aaac aaan aaav aaba aabb aabc aabt aaca aacb aacc aacn aaco aact aacv aana aaon aaoo aata aatc aatt aava abaa abab abac aban abat abb- abba abbb abbo abbt abca abcb abcc abcn abct aboa abob abon aboo abot abov abta abva ac-t acaa acab acac acan acat acba acca accc acco acct acoa acon acot acta actc acto actt actv acvv ana- anaa anab anac anan anao anat anba anbb anbo anca ancc anco anct anna annb anno annt ano- anoa anon ant- anta anto antt antv aoba aoca aonb aono aont aotc at-t ataa atab atac atan atat atca atcc atco atna atno atob atoc aton atot atta attn atto avab avan avao avat avcc avco avon avot avva avvo baaa baan baat baba babb babo bac- baca bacc bacn baco bact bana banc bann bano bant baon bata batc batn bato batt bava bbbb bcaa bcat bcbc bcca bccc bctc bcvo bnoc bnta boab boac boan boat boba bobb bobo boca boco bona bonc bonn bono bont boob booc boon boot bota botb botn boto bott bova bovo btaa btan btcc btob bttb c-bo caaa caab caac caan caat caba cabo cac- caca cacc caco cana canc cann cano cant cat- cata catb catc cato catt catv cava cavo cbac cbat cbbc cbca cbcc cbcn cbct cbna cbot cbta cbtc cbtv cbva cbvb cbvn ccaa ccab ccac ccat ccba ccbc ccbn ccca cccb cccc cccv ccna ccnb ccnc ccob ccoc cctb cctc cctt cctv ccvo cnaa cnac cnbc cnco cnna cnta cntc coan coat coba cobb cobo coca coco coct con- cona conc conn cono cont conv coob coon coot cota cotb cotc cotn coto cott cova covo ctab ctan ctba ctca ctot ctta cttn ctvo ctvt cvac cvca cvcc n-tv naaa naab naac naan naat naba nabc nabo naca nacc naco nan- nana nanb nann nano nant naoc naot nata natc nato natt natv nava navo navv nbaa nbbc nbbo nbca nbcc nbco ncaa ncac ncat ncba ncbc ncca nccc nccn ncct ncna ncnc ncoa ncoc ncta nctc nctv nnnn nnot nntn nnvt noaa noac noat noba nobc nobo noco noct non- nona nonn nono nont noo- noob noon nooo noot noov not- nota noto nott notv nov- nova novo ntbc ntcc ntto nttv nvcc nvtc nvtv oban obba obbo obon obot ocab ocac ocan ocat ocbc occa occc occn occt ocna ocon oct- octa octo onab onan onat onc- onca onco onct onna onno onon ont- ontc onto ontv ooaa ooba oona oont oooo ootb otac otan oto- oton otoo otov otta otto ovan ovo- ovon ovoo ovot taa- taan taat taba tabb tabc tabo taca tacc taco tact tacv tana tann tano tant taoa tata tatb tato tatt tatv tava tavo tbca tbcb tbcc tbta tcca tccc tcnn tcon tcov tctc tnbc tnca tncc toab toan toat toba tobo tobt toca toco tona tonb tonn tono tooa toon toot tota totc toto tott tova tovo ttab ttbb ttcn tton tttt tvac tvbn tvnb tvon tvtv vaan vaat vaca vaco vana vanc vann vano vant vata vato vatt vava vbcc vcat vcon vnav vnto voat voca vona vonn vont vooc voot vota voto vtac vvob vvvv

-aaa- aaaoc aaata aabaa aabba aacbc aanat abaab ababa abaca abaco abana abanc abann abano abaon abava abbac abban abbat abbot abcan abccc abctv aboab aboat abobo abona abono aboon aboot abott abovo abtaa abtao acaca acacb acana acoat acont acoot acton actto anaba anaco anact anana anant anata anato anava anban ancon annan annat annot anoba anona anono anont anoon anota anoto anova anovo antao antna antoa anton ataco atana atbat atnaa atoot atoto attan atto- atton atvan avana avanc avant avato avcon avnat avoca baata baava baban baboo babot bacab bacao bacca bacco bacon bacot bacta banan banat banba banca banco banna banon banov banta batab batac batan batat batco batna batob baton batoo batov