a-ii aaaa aaab aaac aaai aaba aabb aabc aabi aabt aaca aacb aacc aaci aaco aact aaib aaic aaii aaoo aata aatc aatt abaa abab abac abag abai abat abb- abba abbb abbi abbo abbt abca abcb abcc abci abct abia abib abic abig abit aboa abob aboo abot abta ac-t acaa acab acac acag acai acat acba acca accc acci acco acct acga acgi aci- acia acic acoa acog acot acta actc actg acti acto actt ag-o agac agag agai agao agat agba agbo agca agcc agco agct agga aggi agia agib agic agig agii agio agit agob agog agoo agot agta aiai aiba aibo aica aicc aiga aigo aiia aiib aiic aioc aioi aita aiti aitt aoba aoca aotc at-t ataa atab atac atai atat atca atcc atco atgo atia atic atit atob atoc atoi atot atta atti atto ba-i baaa baat baba babb babi babo bac- baca bacc baci baco bact baga bagg bagi bago bagt baia baib baic baig baio bait bata batc bati bato batt bbbb bbci bbga bcaa bcat bcbc bcbg bcca bccc bcci bcia bcit bctc bgca bgia biao biat biba bibb bibi bibo bica bicc bicg bici bico biga bigb bigc bigg bigo bigt bio- bioc biog bioi biot bita bitc bito bitt boab boac boag boai boat boba bobb bobi bobo boca boco boga bogg bogi bogo bogt boi- boii boit boob booc boog boot bota botb boti boto bott btaa btcc btob bttb c-bo caaa caab caac caat caba cabg cabi cabo cac- caca cacc caci caco caga cagg cagi cago caia caib caic caio cait caoi cat- cata catb catc cati cato catt cbac cbat cbbc cbca cbcc cbct cbga cbgb cbia cbit cbot cbta cbtc ccaa ccab ccac ccag ccai ccat ccba ccbc ccca cccb cccc ccci ccga ccgc ccgt ccic ccii ccob ccoc cctb cctc cctt cgac cgcc cgcg ciaa ciao ciat ciba cibc cibi cibo cica cicc cici cico cict ciga cigi ciia ciii ciit ciob cita citb citg citi cito citt coag coai coat coba cobb cobi cobo coca coco coct cogi cogo coia coit coob coot cota cotb cotc coti coto cott ctab ctag ctba ctbi ctca ctia ctic ctot ctta gaba gabb gabi gabo gabt gaga gagg gagi gago gaia gaig gait gata gatc gati gato gatt gbag gbbo gc-c gcaa gcat gcbc gccc gcic gcii gcoa gctc ggbt gggg giaa giac giai giat giba gibb gica giga gigg gigi gigo giog gioi gita gito goai goat goba gobi gobo goca goga gogi gogo goit goog gooi goot gota goti goto gott gtaa gtco gtta i-go iaaa iaac iaai iaat iaba iaca iacc iact iago iaia iata iatc iati ibac ibat ibca ibga ibia ibot ibtb ibtc icaa icab icac icag icai icao icat icbc icca iccb iccc icci icco icct icga icgc icoc icta igac igba igbc igbo igcc igga igia igoo igot iiac iica iiii iiio iiit iioi iioo iita iitt ioba iobi iocg ioci iogt ioii ioio ioit iooi iooo iota ioto itaa itac itai itat itgc itgo itia itic itoi itoo itta itto oaic obai obba obbo obia obit oboi obot ocab ocac ocat ocbc occa occc occi occt ocga oct- octa octi octo ogai ogb ogba oggi ogoa ogog ogoi oiba oici oigo oiii oita oitc oiti ooaa ooba oobi ooia oooo ootb otac otic otit oto- otog otoo otta otti otto taa- taag taat taba tabb tabc tabi tabo taca tacc taci taco tact taga tagg tagi tago taia taig taio tait taoa tata tatb tati tato tatt tbca tbcb tbcc tbit tbta tcca tccc tcga tctc tgcc tgtc tiaa tiab tiao tiba tibi tica ticc tico tiga tigi tiit tita titc titi tito titt toab toat toba tobi tobo tobt toca toci toco toga togo togt toit tooa toot tota totc toti toto tott ttab ttbb tttt