-th a-a a-c a-t aaa aac aad aae aah aas aat ac- aca acc acd ace ach acs act ad- ada adc add ade adh ads adt aea aec aed aee aeh aes aet aha ahc ahd ahe ahh ahs aht as- asa asc asd ase ash ass ast at- ata atc atd ate ath ats att c-- caa cac cad cae cah cas cat cca ccc ccd cce cch ccs cct cda cdc cdd cde cdh cds cdt ce- cea cec ced cee ceh ces cet ch- cha chc chd che chh chs cht csa csc csd cse csh css cst cta ctc ctd cte cth cts ctt daa dac dad dae dah das dat dca dcc dcd dce dcs dct dda ddc ddd dde ddh dds ddt de- dea dec ded dee deh des det dh- dha dhc dhd dhe dhh dhs dht dsa dsc dsd dse dsh dss dst dta dtc dtd dte dth dts dtt eaa eac ead eae eah eas eat ec- eca ecc ecd ece ech ecs ect ed- eda edc edd ede edh eds edt eea eec eed eee ees eet eha ehc ehd ehe ehh ehs eht es- esa esc esd ese esh ess est eta etc etd ete eth ets ett haa hac had hae hah has hat hca hcc hcd hce hch hcs hct hda hdc hdd hde hdh hds hdt he- hea hec hed hee heh hes het hha hhc hhd hhe hhh hhs hht hsa hsc hsd hse hsh hss hst hta htc htd hte hth hts htt saa sac sad sae sah sas sat sca scc scd sce sch scs sct sda sdc sdd sde sdh sds sdt se- sea sec sed see seh ses set sh- sha shc shd she shh shs sht ss- ssa ssc ssd sse ssh sss sst sta stc std ste sth sts stt taa tac tad tae tah tas tat tca tcc tcd tce tch tcs tct tda tdc tdd tde tdh tds tdt te- tea tec ted tee teh tes tet th- tha thc thd the thh ths tht tsa tsc tsd tse tsh tss tst tta ttc ttd tte tth tts ttt