a-a a-b a-t aaa aab aae aak aam aao aat ab- aba abb abe abk abm abo abt aea aeb aee aek aem aeo aet aka akb ake akk akm ako ama amb ame amk amm amo amt aoa aob aoe aok aom aoo aot at- ata atb ate atm ato att baa bab bae bak bam bao bat bba bbb bbe bbk bbm bbo bbt be- bea beb bee bek bem beo bet bka bkb bke bkk bkm bko bkt bma bmb bme bmk bmm bmo bmt boa bob boe bok bom boo bot bta btb bte btk btm bto btt eaa eab eae eak eam eao eat eba ebb ebe ebk ebm ebo ebt eea eeb eee eek eem eeo eet eka ekb eke eko ekt em- ema emb eme emk emm emo emt eo- eoa eob eoe eok eom eoo eot eta etb ete etk etm eto ett k-t ka- kaa kab kae kak kam kao kat kba kbb kbe kbk kbm kbo ke- kea keb kee kek kem keo ket kkb kke kkk kkm kkt kma kmb kme kmk kmm kmo kmt koa kob koe kok kom koo kot kta ktb kte ktk ktm kto ktt m-o maa mab mae mak mam mao mat mba mbb mbe mbk mbm mbo mbt mea meb mee mek mem meo met mka mkb mke mkk mkm mko mkt mma mmb mme mmk mmm mmo mmt moa mob moe mok mom moo mot mta mtb mte mtk mtm mto mtt oaa oab oae oak oam oao oat ob- oba obb obe obk obm obo obt oea oeb oee oem oeo oet oka okb oke okk oko om- oma omb ome omm omo omt oo- ooa oob ook oom ooo oot ot- ota otb ote otk otm oto ott taa tab tae tak tam tao tat tba tbb tbe tbk tbm tbo tbt te- tea teb tee tek tem teo tet tka tkb tke tkk tkm tko tkt tma tmb tme tmk tmm tmo tmt to- toa tob toe tok tom too tot tta ttb tte ttk ttm tto ttt