-th a-a a-b a-c a-t aaa aab aac aah aam aan aat ab- aba abb abc abh abm abn abt ac- aca acb acc ach acm acn act aha ahb ahc ahh ahm ahn aht ama amb amc amh amm amn amt an- ana anb anc anh anm ann ant at- ata atb atc ath atm atn att baa bab bac bah bam ban bat bba bbb bbc bbh bbm bbn bbt bca bcb bcc bch bcm bcn bct bha bhb bhc bhh bhm bht bma bmb bmc bmh bmm bmn bmt bna bnb bnc bnn bnt bta btb btc bth btm btn btt c-- caa cab cac cah cam can cat cba cbb cbc cbh cbm cbn cbt cca ccb ccc cch ccm ccn cct ch- cha chb chc chh chm chn cht cma cmb cmc cmh cmm cmn cmt cn- cna cnb cnc cnh cnm cnn cnt cta ctb ctc cth ctm ctn ctt haa hab hac hah ham han hat hba hbb hbc hbh hbm hbn hbt hca hcb hcc hch hcm hcn hct hha hhb hhc hhh hhm hhn hht hma hmb hmc hmh hmm hmt hna hnb hnc hnh hnn hnt hta htb htc hth htm htn htt maa mab mac mah mam man mat mba mbb mbc mbh mbm mbt mc- mca mcb mcc mch mcm mcn mct mha mhc mhh mhm mhn mht mma mmb mmc mmh mmm mmn mmt mna mnb mnc mnm mnn mnt mta mtb mtc mth mtm mtn mtt naa nab nac nah nam nan nat nba nbb nbc nbm nbn nbt nca ncb ncc nch ncm ncn nct nha nhb nhc nhh nhm nhn nht nma nmb nmc nmh nmm nmn nmt nna nnb nnc nnh nnm nnn nnt nta ntb ntc nth ntm ntn ntt taa tab tac tah tam tan tat tba tbb tbc tbh tbm tbn tbt tca tcb tcc tch tcm tcn tct th- tha thb thc thh thm thn tht tma tmb tmc tmh tmm tmn tmt tna tnb tnc tnh tnm tnn tnt tta ttb ttc tth ttm ttn ttt