a-a a-b a-t aaa aab aak aam aan aao aat ab- aba abb abk abm abn abo abt aka akb akk akm akn ako ama amb amk amm amn amo amt an- ana anb ank anm ann ano ant aoa aob aok aom aon aoo aot at- ata atb atm atn ato att baa bab bak bam ban bao bat bba bbb bbk bbm bbn bbo bbt bka bkb bkk bkm bkn bko bkt bma bmb bmk bmm bmn bmo bmt bna bnb bnk bnn bno bnt boa bob bok bom bon boo bot bta btb btk btm btn bto btt k-t ka- kaa kab kak kam kan kao kat kba kbb kbk kbm kbn kbo kkb kkk kkm kkn kkt kma kmb kmk kmm kmo kmt kn- kna knk knm knn kno knt koa kob kok kom kon koo kot kta ktb ktk ktm ktn kto ktt m-o maa mab mak mam man mao mat mba mbb mbk mbm mbo mbt mka mkb mkk mkm mkn mko mkt mma mmb mmk mmm mmn mmo mmt mna mnb mnk mnm mnn mno mnt moa mob mok mom mon moo mot mta mtb mtk mtm mtn mto mtt naa nab nak nam nan nao nat nba nbb nbk nbm nbn nbo nbt nka nkk nkm nkn nko nkt nma nmb nmk nmm nmn nmo nmt nna nnb nnk nnm nnn nno nnt no- noa nob nok nom non noo not nta ntb ntk ntm ntn nto ntt oaa oab oak oam oan oao oat ob- oba obb obk obm obn obo obt oka okb okk oko om- oma omb omm omn omo omt on- ona onb onk onn ono ont oo- ooa oob ook oom oon ooo oot ot- ota otb otk otm otn oto ott taa tab tak tam tan tao tat tba tbb tbk tbm tbn tbo tbt tka tkb tkk tkm tko tkt tma tmb tmk tmm tmn tmo tmt tna tnb tnk tnm tnn tno tnt to- toa tob tok tom ton too tot tta ttb ttk ttm ttn tto ttt