a-a a-b a-c a-t aaa aab aac aae aaj aam aao aat ab- aba abb abc abe abj abm abo abt ac- aca acb acc ace acj acm aco act aea aeb aec aee aej aem aeo aet aja ajb ajc aje ajj ajm ajo ajt ama amb amc ame amm amo amt aoa aob aoc aoe aoj aom aoo aot at- ata atb atc ate atm ato att baa bab bac bae baj bam bao bat bba bbb bbc bbe bbm bbo bbt bca bcb bcc bce bcj bcm bco bct be- bea beb bec bee bem beo bet bja bjc bjj bjm bjt bma bmb bmc bme bmj bmm bmo bmt boa bob boc boe boj bom boo bot bta btb btc bte btm bto btt c-- c-j caa cab cac cae caj cam cao cat cba cbb cbc cbe cbj cbm cbo cbt cca ccb ccc cce ccj ccm cco cct ce- cea ceb cec cee cej cem ceo cet cja cjb cjc cma cmb cmc cme cmj cmm cmo cmt co- coa cob coc coe coj com coo cot cta ctb ctc cte ctm cto ctt eaa eab eac eae eaj eam eao eat eba ebb ebc ebe ebj ebm ebo ebt ec- eca ecb ecc ece ecj ecm eco ect eea eeb eec eee eem eeo eet eja ejc ejo ejt em- ema emb emc eme emm emo emt eo- eoa eob eoc eoe eom eoo eot eta etb etc ete etj etm eto ett jaa jab jac jae jaj jam jao jat jba jbc jbj jbm jbo jbt jca jcb jcc jce jcm jco jct jea jeb jec jee jej jem jeo jet jja jjb jjc jjj jma jmb jmc jme jmj jmm jmo jmt joa job joc joe joj jom joo jot jta jtb jtc jte jtm jtt m-o maa mab mac mae maj mam mao mat mba mbb mbc mbe mbj mbm mbo mbt mc- mca mcb mcc mce mcm mco mct mea meb mec mee mej mem meo met mjb mjc mje mjj mjm mjt mma mmb mmc mme mmj mmm mmo mmt moa mob moc moe mom moo mot mta mtb mtc mte mtj mtm mto mtt oaa oab oac oae oaj oam oao oat ob- oba obb obc obe obj obm obo obt oc- oca ocb occ ocj ocm oco oct oea oeb oec oee oem oeo oet oja ojb ojc oje ojm ojo om- oma omb omc ome omj omm omo omt oo- ooa oob ooc oom ooo oot ot- ota otb otc ote otm oto ott taa tab tac tae taj tam tao tat tba tbb tbc tbe tbj tbm tbo tbt tca tcb tcc tce tcj tcm tco tct te- tea teb tec tee tej tem teo tet tjc tje tjm tjo tma tmb tmc tme tmj tmm tmo tmt to- toa tob toc toe toj tom too tot tta ttb ttc tte ttm tto ttt