a-a a-c a-t aaa aac aad aae aam aas aat ac- aca acc acd ace acm acs act ad- ada adc add ade adm ads adt aea aec aed aee aem aes aet ama amc amd ame amm ams amt as- asa asc asd ase asm ass ast at- ata atc atd ate atm ats att c-- caa cac cad cae cam cas cat cca ccc ccd cce ccm ccs cct cda cdc cdd cde cdm cds cdt ce- cea cec ced cee cem ces cet cma cmc cmd cme cmm cms cmt csa csc csd cse csm css cst cta ctc ctd cte ctm cts ctt daa dac dad dae dam das dat dca dcc dcd dce dcm dcs dct dda ddc ddd dde ddm dds ddt de- dea dec ded dee dem des det dma dmc dmd dme dmm dms dmt dsa dsc dsd dse dsm dss dst dta dtc dtd dte dtm dts dtt eaa eac ead eae eam eas eat ec- eca ecc ecd ece ecm ecs ect ed- eda edc edd ede edm eds edt eea eec eed eee eem ees eet em- ema emc emd eme emm ems emt es- esa esc esd ese esm ess est eta etc etd ete etm ets ett maa mac mad mae mam mas mat mc- mca mcc mcd mce mcm mcs mct mda mdc mdd mde mdm mds mdt mea mec med mee mem mes met mma mmc mmd mme mmm mms mmt msa msc msd mse msm mss mst mta mtc mtd mte mtm mts mtt saa sac sad sae sam sas sat sca scc scd sce scm scs sct sda sdc sdd sde sdm sds sdt se- sea sec sed see sem ses set sma smc smd sme smm sms smt ss- ssa ssc ssd sse ssm sss sst sta stc std ste stm sts stt taa tac tad tae tam tas tat tca tcc tcd tce tcm tcs tct tda tdc tdd tde tdm tds tdt te- tea tec ted tee tem tes tet tma tmc tmd tme tmm tms tmt tsa tsc tsd tse tsm tss tst tta ttc ttd tte ttm tts ttt