-ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aao aat ab- aba abb abc abf abi abo abt ac- aca acb acc acf aci aco act af- afa afb afc aff afi afo aft ai- aia aib aic aif aii aio ait aoa aob aoc aof aoi aoo aot at- ata atb atc atf ati ato att baa bab bac baf bai bao bat bba bbb bbc bbf bbi bbo bbt bca bcb bcc bcf bci bco bct bfa bfb bfc bff bfi bfo bft bi- bia bib bic bif bii bio bit boa bob boc bof boi boo bot bta btb btc btf bti bto btt c-- caa cab cac caf cai cao cat cba cbb cbc cbf cbi cbo cbt cca ccb ccc ccf cci cco cct cfa cfb cfc cff cfi cfo cft ci- cia cib cic cif cii cio cit co- coa cob coc cof coi coo cot cta ctb ctc ctf cti cto ctt faa fab fac faf fai fao fat fba fbb fbc fbf fbi fbo fbt fca fcb fcc fcf fci fco fct ffa ffc fff ffi ffo fft fia fib fic fif fii fit foa fob foc fof foi foo fot fta ftb ftc ftf fti fto ftt i-f ia- iaa iab iac iaf iai iao iat iba ibb ibc ibf ibi ibo ibt ica icb icc icf ici ico ict ifa ifb ifc iff ifi ifo ift iia iib iic iif iii iio iit io- ioa iob ioc iof ioi ioo iot ita itb itc itf iti ito itt o-i oaa oab oac oaf oai oao oat ob- oba obb obc obf obi obo obt oc- oca ocb occ ocf oci oco oct of- ofa ofb ofc off ofi ofo oft oia oib oic oif oii oio oit oo- ooa oob ooc oof ooi ooo oot ot- ota otb otc otf oti oto ott taa tab tac taf tai tao tat tba tbb tbc tbf tbi tbo tbt tca tcb tcc tcf tci tco tct tfa tfb tfc tff tfi tfo tft tia tib tic tif tii tio tit to- toa tob toc tof toi too tot tta ttb ttc ttf tti tto ttt

a-ii aaaa aaab aaac aaaf aaai aaba aabb aabc aabi aabt aaca aacb aacc aacf aaci aaco aact aafa aafb aafc aaff aafi aaib aaic aaii aaoo aata aatc aatf aatt abaa abab abac abaf abai abat abb- abba abbb abbi abbo abbt abca abcb abcc abcf abci abct abff abia abib abic abit aboa abob abof aboo abot abta ac-t acaa acab acac acai acat acba acca accc accf acci acco acct acfc acfi acft aci- acia acic acif acoa acot acta actc actf acti acto actt afaa afao afat afca afcb afcc afci affa affc affi affo afft afia afib afif afit afoa afoo afta aftc aiai aiba aibo aica aicc aicf aiff aiia aiib aiic aioc aioi aita aitf aiti aitt aoba aoca aotc aotf at-t ataa atab atac atai atat atca atcc atcf atco atfb atfc atia atic atif atit atob atoc atof atoi atot atta atti atto ba-i baaa baaf baat baba babb babi babo bac- baca bacc baci baco bact bafc baff bafo baft baia baib baic baio bait bata batc batf bati bato batt bbbb bbci bbfc bcaa bcat bcbc bcca bccc bcci bcfc bcia bcit bcof bctc bfca bfta bftt biaf biao biat biba bibb bibi bibo bica bicc bici bico bifa biff bifi bio- bioc bioi biot bita bitc bito bitt boab boac boai boat boba bobb bobi bobo boca boco bofa boff boi- boii boit boob booc boof boot bota botb boti boto bott btaa btaf btcc btfc btob bttb c-bo caaa caab caac caaf caat caba cabf cabi cabo cac- caca cacc caci caco cafa cafb cafc caff caia caib caic caio cait caoi cat- cata catb catc catf cati cato catt cbac cbat cbbc cbca cbcc cbct cbfb cbfc cbia cbit cbot cbta cbtc cbtf ccaa ccab ccac ccaf ccai ccat ccba ccbc ccca cccb cccc cccf ccci ccfa ccfc ccff ccfi ccic ccii ccob ccoc cctb cctc cctt cfaa cfab cfac cfao cfbc cfbt cfca cfcb cfcf cfco cffb cfia cfit cfoa cfta cftc ciaa ciao ciat ciba cibc cibi cibo cica cicc cici cico cict cifa ciff ciia ciii ciit ciob cita citb citf citi cito citt coai coat coba cobb cobi cobo coca coco coct cofc coff cofi coft coia coif coit coob coof coot cota cotb cotc coti coto cott ctab ctba ctbi ctca ctcf ctfc ctfo ctia ctic ctot ctta faaa faac faba fabi fabo faca facc fact fafa fafc faff fafi fafo faio fait fata fatc fatf fati fato fatt fcab fcat fcba fcca fccf fcic fcii fcot fcto ffcc ffff ffii fftf fiaa fiac fiaf fiat fiba fica ficc fico fict fifa fifc fiff fifi fifo fift fiii fita fitc fiti fitt foaf foba fobt foca foci foco fofo foia foof foot fota foti foto fott ft-c ftfc ftii iaaa iaac iaai iaat iaba iaca iacc iact iafc iaff iaia iata iatc iati ibac ibat ibca ibfi ibia ibot ibtb ibtc icaa icab icac icaf icai icao icat icbc icca iccb iccc iccf icci icco icct icfb icoc icta ifaa ifac ifao ifat ifbb ifco ific ifit ifta ifto iiac iica iifa iiii iiio iiit iioi iioo iita iitt ioba iobi ioci iofc ioii ioio ioit ioof iooi iooo iota iotf ioto itaa itac itaf itai itat itfa itia itic itif itof itoi itoo itta ittf itto oafc oafo oaic obai obba obbo obia obit oboi obot ocab ocac ocat ocbc occa occc occi occt ocfa oct- octa octi octo off- offa offc offo ofit ofta oiba oici oiii oita oitc oiti ooaa ooba oobi ooff ooia oooo ootb otac otfc otic otif otit oto- otof otoo otta otti otto taa- taaf taat taba tabb tabc tabi tabo taca tacc taci taco tact tafa tafc taff tafi tafo taft taia taio tait taoa tata tatb