a-a a-c a-t aaa aac aae aam aao aas aat ac- aca acc ace acm aco acs act aea aec aee aem aeo aes aet ama amc ame amm amo ams amt aoa aoc aoe aom aoo aos aot as- asa asc ase asm aso ass ast at- ata atc ate atm ato ats att c-- caa cac cae cam cao cas cat cca ccc cce ccm cco ccs cct ce- cea cec cee cem ceo ces cet cma cmc cme cmm cmo cms cmt co- coa coc coe com coo cos cot csa csc cse csm cso css cst cta ctc cte ctm cto cts ctt eaa eac eae eam eao eas eat ec- eca ecc ece ecm eco ecs ect eea eec eee eem eeo ees eet em- ema emc eme emm emo ems emt eo- eoa eoc eoe eom eoo eos eot es- esa esc ese esm eso ess est eta etc ete etm eto ets ett m-o maa mac mae mam mao mas mat mc- mca mcc mce mcm mco mcs mct mea mec mee mem meo mes met mma mmc mme mmm mmo mms mmt moa moc moe mom moo mos mot msa msc mse msm mso mss mst mta mtc mte mtm mto mts mtt oaa oac oae oam oao oas oat oc- oca occ ocm oco ocs oct oea oec oee oem oeo oes oet om- oma omc ome omm omo oms omt oo- ooa ooc oom ooo oos oot os- osa osc ose osm oso oss ost ot- ota otc ote otm oto ots ott saa sac sae sam sao sas sat sca scc sce scm sco scs sct se- sea sec see sem seo ses set sma smc sme smm smo sms smt soa soc soe som soo sos sot ss- ssa ssc sse ssm sso sss sst sta stc ste stm sto sts stt taa tac tae tam tao tas tat tca tcc tce tcm tco tcs tct te- tea tec tee tem teo tes tet tma tmc tme tmm tmo tms tmt to- toa toc toe tom too tos tot tsa tsc tse tsm tso tss tst tta ttc tte ttm tto tts ttt