a-a a-c a-t aaa aac aae aak aam aao aas aat ac- aca acc ace ack acm aco acs act aea aec aee aek aem aeo aes aet aka akc ake akk akm ako aks ama amc ame amk amm amo ams amt aoa aoc aoe aok aom aoo aos aot as- asa asc ase ask asm aso ass ast at- ata atc ate atm ato ats att c-- caa cac cae cak cam cao cas cat cca ccc cce cck ccm cco ccs cct ce- cea cec cee cek cem ceo ces cet cka ckc ckm cko cks ckt cma cmc cme cmk cmm cmo cms cmt co- coa coc coe cok com coo cos cot csa csc cse csk csm cso css cst cta ctc cte ctk ctm cto cts ctt eaa eac eae eak eam eao eas eat ec- eca ecc ece eck ecm eco ecs ect eea eec eee eek eem eeo ees eet eka ekc eke eko eks ekt em- ema emc eme emk emm emo ems emt eo- eoa eoc eoe eok eom eoo eos eot es- esa esc ese esk esm eso ess est eta etc ete etk etm eto ets ett k-t ka- kaa kac kae kak kam kao kas kat kca kcc kce kck kcm kcs kct ke- kea kec kee kek kem keo kes ket kkc kke kkk kkm kks kkt kma kmc kme kmk kmm kmo kms kmt koa koc koe kok kom koo kos kot ksa ksc kse ksk ksm kso kss kst kta ktc kte ktk ktm kto kts ktt m-o maa mac mae mak mam mao mas mat mc- mca mcc mce mck mcm mco mcs mct mea mec mee mek mem meo mes met mka mkc mke mkk mkm mko mks mkt mma mmc mme mmk mmm mmo mms mmt moa moc moe mok mom moo mos mot msa msc mse msk msm mso mss mst mta mtc mte mtk mtm mto mts mtt oaa oac oae oak oam oao oas oat oc- oca occ ock ocm oco ocs oct oea oec oee oem oeo oes oet oka okc oke okk oko oks om- oma omc ome omm omo oms omt oo- ooa ooc ook oom ooo oos oot os- osa osc ose osk osm oso oss ost ot- ota otc ote otk otm oto ots ott saa sac sae sak sam sao sas sat sca scc sce sck scm sco scs sct se- sea sec see sek sem seo ses set sk- ska skc ske skk skm sko sks skt sma smc sme smk smm smo sms smt soa soc soe sok som soo sos sot ss- ssa ssc sse ssk ssm sso sss sst sta stc ste stk stm sto sts stt taa tac tae tak tam tao tas tat tca tcc tce tck tcm tco tcs tct te- tea tec tee tek tem teo tes tet tka tkc tke tkk tkm tko tks tkt tma tmc tme tmk tmm tmo tms tmt to- toa toc toe tok tom too tos tot tsa tsc tse tsk tsm tso tss tst tta ttc tte ttk ttm tto tts ttt