a-a a-b a-t aaa aab aag aam aan aao aat ab- aba abb abg abm abn abo abt ag- aga agb agg agm agn ago agt ama amb amg amm amn amo amt an- ana anb ang anm ann ano ant aoa aob aog aom aon aoo aot at- ata atb atg atm atn ato att baa bab bag bam ban bao bat bba bbb bbg bbm bbn bbo bbt bga bgb bgg bgm bgn bgo bgt bma bmb bmg bmm bmn bmo bmt bna bnb bng bnn bno bnt boa bob bog bom bon boo bot bta btb btg btm btn bto btt gaa gab gag gam gan gao gat gba gbg gbm gbn gbo gbt gga ggb ggg ggm ggn ggo ggt gma gmb gmg gmm gmn gmo gmt gna gnb gnm gnn gno gnt goa gob gog gom gon goo got gta gtb gtg gtm gtn gto gtt m-o maa mab mag mam man mao mat mba mbb mbg mbm mbo mbt mga mgb mgm mgn mgo mgt mma mmb mmg mmm mmn mmo mmt mna mnb mng mnm mnn mno mnt moa mob mog mom mon moo mot mta mtb mtg mtm mtn mto mtt naa nab nag nam nan nao nat nba nbb nbg nbm nbn nbo nbt nga ngb ngg ngm ngn ngo ngt nma nmb nmg nmm nmn nmo nmt nna nnb nng nnm nnn nno nnt no- noa nob nog nom non noo not nta ntb ntg ntm ntn nto ntt oaa oab oag oam oan oao oat ob- oba obb obg obm obn obo obt oga ogg ogn ogo ogt om- oma omb omg omm omn omo omt on- ona onb ong onn ono ont oo- ooa oob oog oom oon ooo oot ot- ota otb otg otm otn oto ott taa tab tag tam tan tao tat tba tbb tbg tbm tbn tbo tbt tga tgb tgg tgm tgn tgo tgt tma tmb tmg tmm tmn tmo tmt tna tnb tng tnm tnn tno tnt to- toa tob tog tom ton too tot tta ttb ttg ttm ttn tto ttt