a-a a-b a-c a-t aaa aab aac aae aak aam aao aat ab- aba abb abc abe abk abm abo abt ac- aca acb acc ace ack acm aco act aea aeb aec aee aek aem aeo aet aka akb akc ake akk akm ako ama amb amc ame amk amm amo amt aoa aob aoc aoe aok aom aoo aot at- ata atb atc ate atm ato att baa bab bac bae bak bam bao bat bba bbb bbc bbe bbk bbm bbo bbt bca bcb bcc bce bck bcm bco bct be- bea beb bec bee bek bem beo bet bka bkb bkc bke bkk bkm bko bkt bma bmb bmc bme bmk bmm bmo bmt boa bob boc boe bok bom boo bot bta btb btc bte btk btm bto btt c-- caa cab cac cae cak cam cao cat cba cbb cbc cbe cbk cbm cbo cbt cca ccb ccc cce cck ccm cco cct ce- cea ceb cec cee cek cem ceo cet cka ckb ckc ckm cko ckt cma cmb cmc cme cmk cmm cmo cmt co- coa cob coc coe cok com coo cot cta ctb ctc cte ctk ctm cto ctt eaa eab eac eae eak eam eao eat eba ebb ebc ebe ebk ebm ebo ebt ec- eca ecb ecc ece eck ecm eco ect eea eeb eec eee eek eem eeo eet eka ekb ekc eke eko ekt em- ema emb emc eme emk emm emo emt eo- eoa eob eoc eoe eok eom eoo eot eta etb etc ete etk etm eto ett k-t ka- kaa kab kac kae kak kam kao kat kba kbb kbc kbe kbk kbm kbo kca kcb kcc kce kck kcm kct ke- kea keb kec kee kek kem keo ket kkb kkc kke kkk kkm kkt kma kmb kmc kme kmk kmm kmo kmt koa kob koc koe kok kom koo kot kta ktb ktc kte ktk ktm kto ktt m-o maa mab mac mae mak mam mao mat mba mbb mbc mbe mbk mbm mbo mbt mc- mca mcb mcc mce mck mcm mco mct mea meb mec mee mek mem meo met mka mkb mkc mke mkk mkm mko mkt mma mmb mmc mme mmk mmm mmo mmt moa mob moc moe mok mom moo mot mta mtb mtc mte mtk mtm mto mtt oaa oab oac oae oak oam oao oat ob- oba obb obc obe obk obm obo obt oc- oca ocb occ ock ocm oco oct oea oeb oec oee oem oeo oet oka okb okc oke okk oko om- oma omb omc ome omm omo omt oo- ooa oob ooc ook oom ooo oot ot- ota otb otc ote otk otm oto ott taa tab tac tae tak tam tao tat tba tbb tbc tbe tbk tbm tbo tbt tca tcb tcc tce tck tcm tco tct te- tea teb tec tee tek tem teo tet tka tkb tkc tke tkk tkm tko tkt tma tmb tmc tme tmk tmm tmo tmt to- toa tob toc toe tok tom too tot tta ttb ttc tte ttk ttm tto ttt

a-ak a-be a-ok aaaa aaab aaac aaae aaam aaba aabb aabc aabm aabt aaca aacb aacc aace aack aacm aaco aact aaea aaec aaem aaka aake aama aamb aamc aame aamo aaoe aaoo aata aatc aatk aatt abaa abab abac abae abak abam abat abb- abba abbb abbe abbo abbt abca abcb abcc abct abec abee abet abma abmb abmc abmt aboa abob abok aboo abot abta ac-t acaa acab acac acae acat acba acca accc acce accm acco acct ace- acea acec acek acem acet acke acma acmc acme acoa acoe acom acot acta actc acte acto actt aeac aecb aect aeka aemt aeom aeta aetc aeto aett akaa akae akam akao akca akee akka akko akok akom akot akte amaa amac amae amam amat amb- amba ambe ambo amca amcc amco amec amee amet amka amm- amma amme ammo amob amoc amok amoo amot amta amtc amte amtk amto aoba aoca aoce aoma aotc at-t ataa atab atac atae atak atat atca atcc atck atco atea atec atee atem ateo atka atkt atm- atma atme atmo atob atoc atoe atok atom atot atta atte atto baaa baak baam baat baba babb babe babm babo bac- baca bacc bace back baco bact baek bak- baka bake bako bakt bama bamb bamc bame bamm bata batc bate bato batt bbbb bbcm bbeb bbet bcaa bcam bcat bcbc bcca bccc bccm bcec bcet bcma bctc beak beam beat beba bebb bebe bebo beca beck beeb beek beem beet beka beke beko bema beme beo- beok beot beta betc bete beto bett bmaa bmce bmoc bmtc boab boac boak boat boba bobb bobe bobo boca boce bock bocm boco boea boec boee boeo boet boka boke boko boma bomb bome bomt boob booc booe book boom boot bota botb bote boto bott btaa btcc btec btek btob bttb c-bo caaa caab caac caam caat caba cabe cabo cac- caca cacc cace cack cacm caco caec caem caka cake cama camb camc came camk camm camo camt cat- cata catb catc cate catm cato catt cbac cbat cbbc cbca cbcc cbce cbcm cbct cbea cbec cbee cbet cbka cbkm cbko cbme cbot cbta cbtc ccaa ccab ccac ccam ccat ccba ccbc ccca cccb cccc cccm ccee cckm ccma ccmb ccmc ccmm ccob ccoc ccom cctb cctc cctt ceac ceat ceba cec- ceca cece cecm ceco cect ceeb ceec ceem ceke cema cemb ceme cemm cet- ceta cete ceto ckac ckat ckbc ckbe ckck ckcm ckco ckem ckmo ckoa ckob ckoc ckom ckoo ckot cktb cmaa cmac cmba cmbc cmcc cmea cmec cmmb cmmc cmoc cmot cmta cmtc coak coat coba cobb cobe cobo coca coce cock coco coct cok- coka coke coko com- coma comb comc come comm como coob cook coom coot cota cotb cotc cote coto cott ctab ctae ctba ctca ctec ctma ctmo ctot ctta eaba eaca eacc