-th a-a a-b a-c a-t aaa aab aac aae aah aam aan aat ab- aba abb abc abe abh abm abn abt ac- aca acb acc ace ach acm acn act aea aeb aec aee aeh aem aen aet aha ahb ahc ahe ahh ahm ahn aht ama amb amc ame amh amm amn amt an- ana anb anc ane anh anm ann ant at- ata atb atc ate ath atm atn att baa bab bac bae bah bam ban bat bba bbb bbc bbe bbh bbm bbn bbt bca bcb bcc bce bch bcm bcn bct be- bea beb bec bee beh bem ben bet bha bhb bhc bhe bhh bhm bht bma bmb bmc bme bmh bmm bmn bmt bna bnb bnc bne bnn bnt bta btb btc bte bth btm btn btt c-- caa cab cac cae cah cam can cat cba cbb cbc cbe cbh cbm cbn cbt cca ccb ccc cce cch ccm ccn cct ce- cea ceb cec cee ceh cem cen cet ch- cha chb chc che chh chm chn cht cma cmb cmc cme cmh cmm cmn cmt cn- cna cnb cnc cne cnh cnm cnn cnt cta ctb ctc cte cth ctm ctn ctt eaa eab eac eae eah eam ean eat eba ebb ebc ebe ebh ebm ebn ebt ec- eca ecb ecc ece ech ecm ecn ect eea eeb eec eee eem een eet eha ehb ehc ehe ehh ehm ehn eht em- ema emb emc eme emh emm emn emt en- ena enb enc ene enh enm enn ent eta etb etc ete eth etm etn ett haa hab hac hae hah ham han hat hba hbb hbc hbe hbh hbm hbn hbt hca hcb hcc hce hch hcm hcn hct he- hea heb hec hee heh hem hen het hha hhb hhc hhe hhh hhm hhn hht hma hmb hmc hme hmh hmm hmt hna hnb hnc hne hnh hnn hnt hta htb htc hte hth htm htn htt maa mab mac mae mah mam man mat mba mbb mbc mbe mbh mbm mbt mc- mca mcb mcc mce mch mcm mcn mct mea meb mec mee meh mem men met mha mhc mhh mhm mhn mht mma mmb mmc mme mmh mmm mmn mmt mna mnb mnc mne mnm mnn mnt mta mtb mtc mte mth mtm mtn mtt naa nab nac nae nah nam nan nat nba nbb nbc nbe nbm nbn nbt nca ncb ncc nce nch ncm ncn nct ne- nea neb nec nee neh nem nen net nha nhb nhc nhe nhh nhm nhn nht nma nmb nmc nme nmh nmm nmn nmt nna nnb nnc nne nnh nnm nnn nnt nta ntb ntc nte nth ntm ntn ntt taa tab tac tae tah tam tan tat tba tbb tbc tbe tbh tbm tbn tbt tca tcb tcc tce tch tcm tcn tct te- tea teb tec tee teh tem ten tet th- tha thb thc the thh thm thn tht tma tmb tmc tme tmh tmm tmn tmt tna tnb tnc tne tnh tnm tnn tnt tta ttb ttc tte tth ttm ttn ttt