a-a a-b a-t aaa aab aae aag aam aao aat ab- aba abb abe abg abm abo abt aea aeb aee aeg aem aeo aet ag- aga agb age agg agm ago agt ama amb ame amg amm amo amt aoa aob aoe aog aom aoo aot at- ata atb ate atg atm ato att baa bab bae bag bam bao bat bba bbb bbe bbg bbm bbo bbt be- bea beb bee beg bem beo bet bga bgb bge bgg bgm bgo bgt bma bmb bme bmg bmm bmo bmt boa bob boe bog bom boo bot bta btb bte btg btm bto btt eaa eab eae eag eam eao eat eba ebb ebe ebg ebm ebo ebt eea eeb eee eeg eem eeo eet ega egb ege egg egm ego egt em- ema emb eme emg emm emo emt eo- eoa eob eoe eog eom eoo eot eta etb ete etg etm eto ett gaa gab gae gag gam gao gat gba gbe gbg gbm gbo gbt ge- gea geb gee geg gem geo get gga ggb ggg ggm ggo ggt gma gmb gme gmg gmm gmo gmt goa gob goe gog gom goo got gta gtb gte gtg gtm gto gtt m-o maa mab mae mag mam mao mat mba mbb mbe mbg mbm mbo mbt mea meb mee meg mem meo met mga mgb mge mgm mgo mgt mma mmb mme mmg mmm mmo mmt moa mob moe mog mom moo mot mta mtb mte mtg mtm mto mtt oaa oab oae oag oam oao oat ob- oba obb obe obg obm obo obt oea oeb oee oeg oem oeo oet oga oge ogg ogo ogt om- oma omb ome omg omm omo omt oo- ooa oob oog oom ooo oot ot- ota otb ote otg otm oto ott taa tab tae tag tam tao tat tba tbb tbe tbg tbm tbo tbt te- tea teb tee teg tem teo tet tga tgb tge tgg tgm tgo tgt tma tmb tme tmg tmm tmo tmt to- toa tob toe tog tom too tot tta ttb tte ttg ttm tto ttt