a-a a-c a-t aaa aac aad aae aaf aan aao aas aat ac- aca acc acd ace acf acn aco acs act ad- ada adc add ade adf adn ado ads adt aea aec aed aee aef aen aeo aes aet af- afa afc afd afe aff afn afo afs aft an- ana anc and ane anf ann ano ans ant aoa aoc aod aoe aof aon aoo aos aot as- asa asc asd ase asf asn aso ass ast at- ata atc atd ate atf atn ato ats att c-- caa cac cad cae caf can cao cas cat cca ccc ccd cce ccf ccn cco ccs cct cda cdc cdd cde cdf cdn cdo cds cdt ce- cea cec ced cee cef cen ceo ces cet cfa cfc cfd cfe cff cfn cfo cfs cft cn- cna cnc cnd cne cnf cnn cno cns cnt co- coa coc cod coe cof con coo cos cot csa csc csd cse csf csn cso css cst cta ctc ctd cte ctf ctn cto cts ctt daa dac dad dae daf dan dao das dat dca dcc dcd dce dcf dcn dco dcs dct dda ddc ddd dde ddf ddn ddo dds ddt de- dea dec ded dee def den deo des det dfa dfc dfd dfe dff dfn dfo dfs dft dna dnc dnd dne dnf dnn dno dns dnt doa doc dod doe dof don doo dos dot dsa dsc dsd dse dsf dsn dso dss dst dta dtc dtd dte dtf dtn dto dts dtt eaa eac ead eae eaf ean eao eas eat ec- eca ecc ecd ece ecf ecn eco ecs ect ed- eda edc edd ede edf edn edo eds edt eea eec eed eee eef een eeo ees eet ef- efa efc efd efe eff efo efs eft en- ena enc end ene enf enn eno ens ent eo- eoa eoc eod eoe eof eon eoo eos eot es- esa esc esd ese esf esn eso ess est eta etc etd ete etf etn eto ets ett faa fac fad fae faf fan fao fas fat fca fcc fcd fce fcf fcn fco fcs fct fda fdc fdd fde fdf fdn fdo fds fdt fea fec fed fee fef fen feo fes fet ffa ffc ffd ffe fff ffn ffo ffs fft fna fnc fnd fne fnf fnn fns fnt foa foc foe fof fon foo fos fot fsa fsc fsd fse fsf fsn fso fss fst fta ftc ftd fte ftf ftn fto fts ftt naa nac nad nae naf nan nao nas nat nca ncc ncd nce ncf ncn nco ncs nct nda ndc ndd nde ndf ndn ndo nds ndt ne- nea nec ned nee nef nen neo nes net nfa nfc nfd nfe nff nfn nfo nfs nft nna nnc nne nnf nnn nno nns nnt no- noa noc nod noe nof non noo nos not nsa nsc nsd nse nsf nsn nso nss nst nta ntc ntd nte ntf ntn nto nts ntt oaa oac oad oae oaf oan oao oas oat oc- oca occ ocd ocf ocn oco ocs oct oda odc odd ode odf odn odo ods odt oea oec oed oee oef oen oeo oes oet of- ofa ofc ofd ofe off ofn ofo ofs oft on- ona onc ond one onf onn ono ons ont oo- ooa ooc ood oof oon ooo oos oot os- osa osc osd ose osf osn oso oss ost ot- ota otc otd ote otf otn oto ots ott saa sac sad sae saf san sao sas sat sca scc scd sce scf scn sco scs sct sda sdc sdd sde sdf sdn sdo sds sdt se- sea sec sed see sef sen seo ses set sfa sfc sfd sfe sff sfn sfo sfs sft sna snc snd sne snf snn sno sns snt soa soc sod soe sof son soo sos sot ss- ssa ssc ssd sse ssf ssn sso sss sst sta stc std ste stf stn sto sts stt taa tac tad tae taf tan tao tas tat tca tcc tcd tce tcf tcn tco tcs tct tda tdc tdd tde tdf tdn tdo tds tdt te- tea tec ted tee tef ten teo tes tet tfa tfc tfd tfe tff tfn tfo tfs tft tna tnc tnd tne tnf tnn tno tns tnt to- toa toc tod toe tof ton too tos tot tsa tsc tsd tse tsf tsn tso tss tst tta ttc ttd tte ttf ttn tto tts ttt