-th a-a a-b a-c a-t aaa aab aac aad aae aah aam aao aat ab- aba abb abc abd abe abh abm abo abt ac- aca acb acc acd ace ach acm aco act ad- ada adb adc add ade adh adm ado adt aea aeb aec aed aee aeh aem aeo aet aha ahb ahc ahd ahe ahh ahm aho aht ama amb amc amd ame amh amm amo amt aoa aob aoc aod aoe aoh aom aoo aot at- ata atb atc atd ate ath atm ato att baa bab bac bad bae bah bam bao bat bba bbb bbc bbd bbe bbh bbm bbo bbt bca bcb bcc bcd bce bch bcm bco bct bda bdb bdc bdd bde bdh bdm bdo bdt be- bea beb bec bed bee beh bem beo bet bha bhb bhc bhd bhe bhh bhm bho bht bma bmb bmc bmd bme bmh bmm bmo bmt boa bob boc bod boe boh bom boo bot bta btb btc btd bte bth btm bto btt c-- caa cab cac cad cae cah cam cao cat cba cbb cbc cbd cbe cbh cbm cbo cbt cca ccb ccc ccd cce cch ccm cco cct cda cdb cdc cdd cde cdh cdm cdo cdt ce- cea ceb cec ced cee ceh cem ceo cet ch- cha chb chc chd che chh chm cho cht cma cmb cmc cmd cme cmh cmm cmo cmt co- coa cob coc cod coe coh com coo cot cta ctb ctc ctd cte cth ctm cto ctt daa dab dac dad dae dah dam dao dat dba dbb dbc dbd dbe dbh dbm dbo dbt dca dcb dcc dcd dce dcm dco dct dda ddb ddc ddd dde ddh ddm ddo ddt de- dea deb dec ded dee deh dem deo det dh- dha dhb dhc dhd dhe dhh dhm dho dht dma dmb dmc dmd dme dmh dmm dmo dmt doa dob doc dod doe doh dom doo dot dta dtb dtc dtd dte dth dtm dto dtt eaa eab eac ead eae eah eam eao eat eba ebb ebc ebd ebe ebh ebm ebo ebt ec- eca ecb ecc ecd ece ech ecm eco ect ed- eda edb edc edd ede edh edm edo edt eea eeb eec eed eee eem eeo eet eha ehb ehc ehd ehe ehh ehm eho eht em- ema emb emc emd eme emh emm emo emt eo- eoa eob eoc eod eoe eoh eom eoo eot eta etb etc etd ete eth etm eto ett haa hab hac had hae hah ham hao hat hba hbb hbc hbd hbe hbh hbm hbo hbt hca hcb hcc hcd hce hch hcm hco hct hda hdb hdc hdd hde hdh hdm hdo hdt he- hea heb hec hed hee heh hem heo het hha hhb hhc hhd hhe hhh hhm hho hht hma hmb hmc hmd hme hmh hmm hmo hmt hoa hob hoc hod hoe hoh hom hoo hot hta htb htc htd hte hth htm hto htt m-o maa mab mac mad mae mah mam mao mat mba mbb mbc mbd mbe mbh mbm mbo mbt mc- mca mcb mcc mcd mce mch mcm mco mct mda mdb mdc mdd mde mdh mdm mdo mdt mea meb mec med mee meh mem meo met mha mhc mhd mhh mhm mho mht mma mmb mmc mmd mme mmh mmm mmo mmt moa mob moc mod moe moh mom moo mot mta mtb mtc mtd mte mth mtm mto mtt oaa oab oac oad oae oah oam oao oat ob- oba obb obc obd obe obh obm obo obt oc- oca ocb occ ocd och ocm oco oct oda odb odc odd ode odh odm odo odt oea oeb oec oed oee oeh oem oeo oet oha ohc ohd ohe ohh ohm oho oht om- oma omb omc omd ome omh omm omo omt oo- ooa oob ooc ood ooh oom ooo oot ot- ota otb otc otd ote oth otm oto ott taa tab tac tad tae tah tam tao tat tba tbb tbc tbd tbe tbh tbm tbo tbt tca tcb tcc tcd tce tch tcm tco tct tda tdb tdc tdd tde tdh tdm tdo tdt te- tea teb tec ted tee teh tem teo tet th- tha thb thc thd the thh thm tho tht tma tmb tmc tmd tme tmh tmm tmo tmt to- toa tob toc tod toe toh tom too tot tta ttb ttc ttd tte tth ttm tto ttt