-th a-a a-b a-t aaa aab aah aam aan aao aat ab- aba abb abh abm abn abo abt aha ahb ahh ahm ahn aho aht ama amb amh amm amn amo amt an- ana anb anh anm ann ano ant aoa aob aoh aom aon aoo aot at- ata atb ath atm atn ato att baa bab bah bam ban bao bat bba bbb bbh bbm bbn bbo bbt bha bhb bhh bhm bho bht bma bmb bmh bmm bmn bmo bmt bna bnb bnn bno bnt boa bob boh bom bon boo bot bta btb bth btm btn bto btt haa hab hah ham han hao hat hba hbb hbh hbm hbn hbo hbt hha hhb hhh hhm hhn hho hht hma hmb hmh hmm hmo hmt hna hnb hnh hnn hno hnt hoa hob hoh hom hon hoo hot hta htb hth htm htn hto htt m-o maa mab mah mam man mao mat mba mbb mbh mbm mbo mbt mha mhh mhm mhn mho mht mma mmb mmh mmm mmn mmo mmt mna mnb mnm mnn mno mnt moa mob moh mom mon moo mot mta mtb mth mtm mtn mto mtt naa nab nah nam nan nao nat nba nbb nbm nbn nbo nbt nha nhb nhh nhm nhn nht nma nmb nmh nmm nmn nmo nmt nna nnb nnh nnm nnn nno nnt no- noa nob noh nom non noo not nta ntb nth ntm ntn nto ntt oaa oab oah oam oan oao oat ob- oba obb obh obm obn obo obt oha ohh ohm ohn oho oht om- oma omb omh omm omn omo omt on- ona onb onh onn ono ont oo- ooa oob ooh oom oon ooo oot ot- ota otb oth otm otn oto ott taa tab tah tam tan tao tat tba tbb tbh tbm tbn tbo tbt th- tha thb thh thm thn tho tht tma tmb tmh tmm tmn tmo tmt tna tnb tnh tnm tnn tno tnt to- toa tob toh tom ton too tot tta ttb tth ttm ttn tto ttt