-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aao aat ab- aba abb abc abg abi abo abt ac- aca acb acc acg aci aco act ag- aga agb agc agg agi ago agt ai- aia aib aic aig aii aio ait aoa aob aoc aog aoi aoo aot at- ata atb atc atg ati ato att baa bab bac bag bai bao bat bba bbb bbc bbg bbi bbo bbt bca bcb bcc bcg bci bco bct bga bgb bgc bgg bgi bgo bgt bi- bia bib bic big bii bio bit boa bob boc bog boi boo bot bta btb btc btg bti bto btt c-- caa cab cac cag cai cao cat cba cbb cbc cbg cbi cbo cbt cca ccb ccc ccg cci cco cct cga cgb cgc cgg cgi cgo cgt ci- cia cib cic cig cii cio cit co- coa cob coc cog coi coo cot cta ctb ctc ctg cti cto ctt gaa gab gac gag gai gao gat gba gbc gbg gbi gbo gbt gca gcb gcc gcg gci gco gct gga ggb ggc ggg ggi ggo ggt gia gib gic gig gii gio git goa gob goc gog goi goo got gta gtb gtc gtg gti gto gtt ia- iaa iab iac iag iai iao iat iba ibb ibc ibg ibi ibo ibt ica icb icc icg ici ico ict iga igb igc igg igi igo igt iia iib iic iii iio iit io- ioa iob ioc iog ioi ioo iot ita itb itc itg iti ito itt o-i oaa oab oac oag oai oao oat ob- oba obb obc obg obi obo obt oc- oca ocb occ ocg oci oco oct oga ogc ogg ogi ogo ogt oia oib oic oii oio oit oo- ooa oob ooc oog ooi ooo oot ot- ota otb otc otg oti oto ott taa tab tac tag tai tao tat tba tbb tbc tbg tbi tbo tbt tca tcb tcc tcg tci tco tct tga tgb tgc tgg tgi tgo tgt tia tib tic tig tii tio tit to- toa tob toc tog toi too tot tta ttb ttc ttg tti tto ttt

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