a-a a-c a-t aaa aac aad aae aan aao aas aat ac- aca acc acd ace acn aco acs act ad- ada adc add ade adn ado ads adt aea aec aed aee aen aeo aes aet an- ana anc and ane ann ano ans ant aoa aoc aod aoe aon aoo aos aot as- asa asc asd ase asn aso ass ast at- ata atc atd ate atn ato ats att c-- caa cac cad cae can cao cas cat cca ccc ccd cce ccn cco ccs cct cda cdc cdd cde cdn cdo cds cdt ce- cea cec ced cee cen ceo ces cet cn- cna cnc cnd cne cnn cno cns cnt co- coa coc cod coe con coo cos cot csa csc csd cse csn cso css cst cta ctc ctd cte ctn cto cts ctt daa dac dad dae dan dao das dat dca dcc dcd dce dcn dco dcs dct dda ddc ddd dde ddn ddo dds ddt de- dea dec ded dee den deo des det dna dnc dnd dne dnn dno dns dnt doa doc dod doe don doo dos dot dsa dsc dsd dse dsn dso dss dst dta dtc dtd dte dtn dto dts dtt eaa eac ead eae ean eao eas eat ec- eca ecc ecd ece ecn eco ecs ect ed- eda edc edd ede edn edo eds edt eea eec eed eee een eeo ees eet en- ena enc end ene enn eno ens ent eo- eoa eoc eod eoe eon eoo eos eot es- esa esc esd ese esn eso ess est eta etc etd ete etn eto ets ett naa nac nad nae nan nao nas nat nca ncc ncd nce ncn nco ncs nct nda ndc ndd nde ndn ndo nds ndt ne- nea nec ned nee nen neo nes net nna nnc nne nnn nno nns nnt no- noa noc nod noe non noo nos not nsa nsc nsd nse nsn nso nss nst nta ntc ntd nte ntn nto nts ntt oaa oac oad oae oan oao oas oat oc- oca occ ocd ocn oco ocs oct oda odc odd ode odn odo ods odt oea oec oed oee oen oeo oes oet on- ona onc ond one onn ono ons ont oo- ooa ooc ood oon ooo oos oot os- osa osc osd ose osn oso oss ost ot- ota otc otd ote otn oto ots ott saa sac sad sae san sao sas sat sca scc scd sce scn sco scs sct sda sdc sdd sde sdn sdo sds sdt se- sea sec sed see sen seo ses set sna snc snd sne snn sno sns snt soa soc sod soe son soo sos sot ss- ssa ssc ssd sse ssn sso sss sst sta stc std ste stn sto sts stt taa tac tad tae tan tao tas tat tca tcc tcd tce tcn tco tcs tct tda tdc tdd tde tdn tdo tds tdt te- tea tec ted tee ten teo tes tet tna tnc tnd tne tnn tno tns tnt to- toa toc tod toe ton too tos tot tsa tsc tsd tse tsn tso tss tst tta ttc ttd tte ttn tto tts ttt