a-a a-c a-t aaa aac aad aae aao aap aas aat ac- aca acc acd ace aco acp acs act ad- ada adc add ade ado adp ads adt aea aec aed aee aeo aep aes aet aoa aoc aod aoe aoo aop aos aot ap- apa apc apd ape apo app aps apt as- asa asc asd ase aso asp ass ast at- ata atc atd ate ato atp ats att c-- caa cac cad cae cao cap cas cat cca ccc ccd cce cco ccp ccs cct cda cdc cdd cde cdo cdp cds cdt ce- cea cec ced cee ceo cep ces cet co- coa coc cod coe coo cop cos cot cpa cpc cpd cpe cpo cpp cps cpt csa csc csd cse cso csp css cst cta ctc ctd cte cto ctp cts ctt daa dac dad dae dao dap das dat dca dcc dcd dce dco dcp dcs dct dda ddc ddd dde ddo ddp dds ddt de- dea dec ded dee deo dep des det doa doc dod doe doo dop dos dot dpa dpc dpd dpe dpo dpp dps dpt dsa dsc dsd dse dso dsp dss dst dta dtc dtd dte dto dtp dts dtt eaa eac ead eae eao eap eas eat ec- eca ecc ecd ece eco ecs ect ed- eda edc edd ede edo edp eds edt eea eec eed eee eeo eep ees eet eo- eoa eoc eod eoe eoo eop eos eot ep- epa epc epd epe epo epp eps ept es- esa esc esd ese eso esp ess est eta etc etd ete eto etp ets ett oaa oac oad oae oao oap oas oat oc- oca occ ocd oco ocp ocs oct oda odc odd ode odo odp ods odt oea oec oed oee oeo oep oes oet oo- ooa ooc ood ooo oop oos oot op- opa opc opd ope opo opp ops opt os- osa osc osd ose oso osp oss ost ot- ota otc otd ote oto otp ots ott p-p paa pac pad pae pao pap pas pat pca pcc pcd pce pco pcp pcs pct pda pdc pdd pde pdo pdp pds pdt pea pec ped pee peo pep pes pet poa poc pod poe poo pop pos pot ppa ppc ppd ppe ppo ppp pps ppt ps- psa psc psd pse pso psp pss pst pt- pta ptc ptd pte pto ptp pts ptt saa sac sad sae sao sap sas sat sca scc scd sce sco scp scs sct sda sdc sdd sde sdo sdp sds sdt se- sea sec sed see seo sep ses set soa soc sod soe soo sop sos sot spa spc spd spe spo spp sps spt ss- ssa ssc ssd sse sso ssp sss sst sta stc std ste sto stp sts stt taa tac tad tae tao tap tas tat tca tcc tcd tce tco tcp tcs tct tda tdc tdd tde tdo tdp tds tdt te- tea tec ted tee teo tep tes tet to- toa toc tod toe too top tos tot tpa tpc tpd tpe tpo tpp tps tpt tsa tsc tsd tse tso tsp tss tst tta ttc ttd tte tto ttp tts ttt