-ey a-a a-b a-c a-t aaa aab aac aae aam aao aat aay ab- aba abb abc abe abm abo abt aby ac- aca acb acc ace acm aco act acy aea aeb aec aee aem aeo aet aey ama amb amc ame amm amo amt amy aoa aob aoc aoe aom aoo aot at- ata atb atc ate atm ato att ay- aya ayc aye ayo ayt baa bab bac bae bam bao bat bay bba bbb bbc bbe bbm bbo bbt bby bca bcb bcc bce bcm bco bct bcy be- bea beb bec bee bem beo bet bey bma bmb bmc bme bmm bmo bmt boa bob boc boe bom boo bot boy bta btb btc bte btm bto btt bty by- bya byc bye bym byo byt c-- caa cab cac cae cam cao cat cay cba cbb cbc cbe cbm cbo cbt cby cca ccb ccc cce ccm cco cct ce- cea ceb cec cee cem ceo cet cey cma cmb cmc cme cmm cmo cmt cmy co- coa cob coc coe com coo cot coy cta ctb ctc cte ctm cto ctt cty cya cyb cyc cye cym cyo cyt eaa eab eac eae eam eao eat eba ebb ebc ebe ebm ebo ebt eby ec- eca ecb ecc ece ecm eco ect eea eeb eec eee eem eeo eet eey em- ema emb emc eme emm emo emt eo- eoa eob eoc eoe eom eoo eot eta etb etc ete etm eto ett ety eya eyc eye eym eyo eyt m-o maa mab mac mae mam mao mat may mba mbb mbc mbe mbm mbo mbt mc- mca mcb mcc mce mcm mco mct mea meb mec mee mem meo met mey mma mmb mmc mme mmm mmo mmt moa mob moc moe mom moo mot moy mta mtb mtc mte mtm mto mtt my- mya myb myc mye mym myo myt oaa oab oac oae oam oao oat ob- oba obb obc obe obm obo obt oby oc- oca ocb occ ocm oco oct oea oeb oec oee oem oeo oet oey om- oma omb omc ome omm omo omt omy oo- ooa oob ooc oom ooo oot ot- ota otb otc ote otm oto ott oya oye oyo taa tab tac tae tam tao tat tay tba tbb tbc tbe tbm tbo tbt tca tcb tcc tce tcm tco tct te- tea teb tec tee tem teo tet tey tma tmb tmc tme tmm tmo tmt tmy to- toa tob toc toe tom too tot toy tta ttb ttc tte ttm tto ttt tty tya tyc tye tym tyo tyt yaa yab yac yae yam yao yat yay ybc ybe ybm yby yca ycc yce yco ycy yea yeb yec yee yem yeo yet yey yma ymc yme ymm ymo ymt yob yoc yoe yom yoo yot yoy yta ytc yte ytm yto ytt yyb yyc yye yyt yyy