a-a a-c a-t aaa aac aad aae aak aao aas aat ac- aca acc acd ace ack aco acs act ad- ada adc add ade adk ado ads adt aea aec aed aee aek aeo aes aet aka akc akd ake akk ako aks aoa aoc aod aoe aok aoo aos aot as- asa asc asd ase ask aso ass ast at- ata atc atd ate ato ats att c-- caa cac cad cae cak cao cas cat cca ccc ccd cce cck cco ccs cct cda cdc cdd cde cdk cdo cds cdt ce- cea cec ced cee cek ceo ces cet cka ckc ckd cko cks ckt co- coa coc cod coe cok coo cos cot csa csc csd cse csk cso css cst cta ctc ctd cte ctk cto cts ctt daa dac dad dae dak dao das dat dca dcc dcd dce dck dco dcs dct dda ddc ddd dde ddk ddo dds ddt de- dea dec ded dee dek deo des det dka dkc dke dkk dko dks dkt doa doc dod doe dok doo dos dot dsa dsc dsd dse dsk dso dss dst dta dtc dtd dte dtk dto dts dtt eaa eac ead eae eak eao eas eat ec- eca ecc ecd ece eck eco ecs ect ed- eda edc edd ede edk edo eds edt eea eec eed eee eek eeo ees eet eka ekc ekd eke eko eks ekt eo- eoa eoc eod eoe eok eoo eos eot es- esa esc esd ese esk eso ess est eta etc etd ete etk eto ets ett k-t ka- kaa kac kad kae kak kao kas kat kca kcc kcd kce kck kcs kct kda kdc kde kdk kdo kds kdt ke- kea kec ked kee kek keo kes ket kkc kke kkk kks kkt koa koc kod koe kok koo kos kot ksa ksc ksd kse ksk kso kss kst kta ktc kte ktk kto kts ktt oaa oac oad oae oak oao oas oat oc- oca occ ocd ock oco ocs oct oda odc odd ode odo ods odt oea oec oed oee oeo oes oet oka okc okd oke okk oko oks oo- ooa ooc ood ook ooo oos oot os- osa osc osd ose osk oso oss ost ot- ota otc otd ote otk oto ots ott saa sac sad sae sak sao sas sat sca scc scd sce sck sco scs sct sda sdc sdd sde sdk sdo sds sdt se- sea sec sed see sek seo ses set sk- ska skc skd ske skk sko sks skt soa soc sod soe sok soo sos sot ss- ssa ssc ssd sse ssk sso sss sst sta stc std ste stk sto sts stt taa tac tad tae tak tao tas tat tca tcc tcd tce tck tco tcs tct tda tdc tdd tde tdk tdo tds tdt te- tea tec ted tee tek teo tes tet tka tkc tke tkk tko tks tkt to- toa toc tod toe tok too tos tot tsa tsc tsd tse tsk tso tss tst tta ttc ttd tte ttk tto tts ttt