-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