a-a a-c a-t aaa aac aae aaf aao aap aas aat ac- aca acc ace acf aco acp acs act aea aec aee aef aeo aep aes aet af- afa afc afe aff afo afp afs aft aoa aoc aoe aof aoo aop aos aot ap- apa apc ape apf apo app aps apt as- asa asc ase asf aso asp ass ast at- ata atc ate atf ato atp ats att c-- caa cac cae caf cao cap cas cat cca ccc cce ccf cco ccp ccs cct ce- cea cec cee cef ceo cep ces cet cfa cfc cfe cff cfo cfp cfs cft co- coa coc coe cof coo cop cos cot cpa cpc cpe cpf cpo cpp cps cpt csa csc cse csf cso csp css cst cta ctc cte ctf cto ctp cts ctt eaa eac eae eaf eao eap eas eat ec- eca ecc ece ecf eco ecs ect eea eec eee eef eeo eep ees eet ef- efa efc efe eff efo efp efs eft eo- eoa eoc eoe eof eoo eop eos eot ep- epa epc epe epf epo epp eps ept es- esa esc ese esf eso esp ess est eta etc ete etf eto etp ets ett faa fac fae faf fao fap fas fat fca fcc fce fcf fco fcp fcs fct fea fec fee fef feo fep fes fet ffa ffc ffe fff ffo ffp ffs fft foa foc foe fof foo fop fos fot fpa fpc fpe fpo fpp fps fpt fsa fsc fse fsf fso fsp fss fst fta ftc fte ftf fto ftp fts ftt oaa oac oae oaf oao oap oas oat oc- oca occ ocf oco ocp ocs oct oea oec oee oef oeo oep oes oet of- ofa ofc ofe off ofo ofp ofs oft oo- ooa ooc oof ooo oop oos oot op- opa opc ope opf opo opp ops opt os- osa osc ose osf oso osp oss ost ot- ota otc ote otf oto otp ots ott p-p paa pac pae paf pao pap pas pat pca pcc pce pcf pco pcp pcs pct pea pec pee pef peo pep pes pet pfa pfc pfe pff pfo pfp pfs pft poa poc poe pof poo pop pos pot ppa ppc ppe ppf ppo ppp pps ppt ps- psa psc pse psf pso psp pss pst pt- pta ptc pte ptf pto ptp pts ptt saa sac sae saf sao sap sas sat sca scc sce scf sco scp scs sct se- sea sec see sef seo sep ses set sfa sfc sfe sff sfo sfp sfs sft soa soc soe sof soo sop sos sot spa spc spe spf spo spp sps spt ss- ssa ssc sse ssf sso ssp sss sst sta stc ste stf sto stp sts stt taa tac tae taf tao tap tas tat tca tcc tce tcf tco tcp tcs tct te- tea tec tee tef teo tep tes tet tfa tfc tfe tff tfo tfp tfs tft to- toa toc toe tof too top tos tot tpa tpc tpe tpf tpo tpp tps tpt tsa tsc tse tsf tso tsp tss tst tta ttc tte ttf tto ttp tts ttt