a-a a-c aaa aac aad aae aaf aao aap aas ac- aca acc acd ace acf aco acp acs ad- ada adc add ade adf ado adp ads aea aec aed aee aef aeo aep aes af- afa afc afd afe aff afo afp afs aoa aoc aod aoe aof aoo aop aos ap- apa apc apd ape apf apo app aps as- asa asc asd ase asf aso asp ass c-- caa cac cad cae caf cao cap cas cca ccc ccd cce ccf cco ccp ccs cda cdc cdd cde cdf cdo cdp cds ce- cea cec ced cee cef ceo cep ces cfa cfc cfd cfe cff cfo cfp cfs co- coa coc cod coe cof coo cop cos cpa cpc cpd cpe cpf cpo cpp cps csa csc csd cse csf cso csp css daa dac dad dae daf dao dap das dca dcc dcd dce dcf dco dcp dcs dda ddc ddd dde ddf ddo ddp dds de- dea dec ded dee def deo dep des dfa dfc dfd dfe dff dfo dfp dfs doa doc dod doe dof doo dop dos dpa dpc dpd dpe dpf dpo dpp dps dsa dsc dsd dse dsf dso dsp dss eaa eac ead eae eaf eao eap eas ec- eca ecc ecd ece ecf eco ecs ed- eda edc edd ede edf edo edp eds eea eec eed eee eef eeo eep ees ef- efa efc efd efe eff efo efp efs eo- eoa eoc eod eoe eof eoo eop eos ep- epa epc epd epe epf epo epp eps es- esa esc esd ese esf eso esp ess faa fac fad fae faf fao fap fas fca fcc fcd fce fcf fco fcp fcs fda fdc fdd fde fdf fdo fdp fds fea fec fed fee fef feo fep fes ffa ffc ffd ffe fff ffo ffp ffs foa foc foe fof foo fop fos fpa fpc fpd fpe fpo fpp fps fsa fsc fsd fse fsf fso fsp fss oaa oac oad oae oaf oao oap oas oc- oca occ ocd ocf oco ocp ocs oda odc odd ode odf odo odp ods oea oec oed oee oef oeo oep oes of- ofa ofc ofd ofe off ofo ofp ofs oo- ooa ooc ood oof ooo oop oos op- opa opc opd ope opf opo opp ops os- osa osc osd ose osf oso osp oss p-p paa pac pad pae paf pao pap pas pca pcc pcd pce pcf pco pcp pcs pda pdc pdd pde pdf pdo pdp pds pea pec ped pee pef peo pep pes pfa pfc pfd pfe pff pfo pfp pfs poa poc pod poe pof poo pop pos ppa ppc ppd ppe ppf ppo ppp pps ps- psa psc psd pse psf pso psp pss saa sac sad sae saf sao sap sas sca scc scd sce scf sco scp scs sda sdc sdd sde sdf sdo sdp sds se- sea sec sed see sef seo sep ses sfa sfc sfd sfe sff sfo sfp sfs soa soc sod soe sof soo sop sos spa spc spd spe spf spo spp sps ss- ssa ssc ssd sse ssf sso ssp sss