a-a a-c aaa aac aad aae aaf aap aas ac- aca acc acd ace acf acp acs ad- ada adc add ade adf adp ads aea aec aed aee aef aep aes af- afa afc afd afe aff afp afs ap- apa apc apd ape apf app aps as- asa asc asd ase asf asp ass c-- caa cac cad cae caf cap cas cca ccc ccd cce ccf ccp ccs cda cdc cdd cde cdf cdp cds ce- cea cec ced cee cef cep ces cfa cfc cfd cfe cff cfp cfs cpa cpc cpd cpe cpf cpp cps csa csc csd cse csf csp css daa dac dad dae daf dap das dca dcc dcd dce dcf dcp dcs dda ddc ddd dde ddf ddp dds de- dea dec ded dee def dep des dfa dfc dfd dfe dff dfp dfs dpa dpc dpd dpe dpf dpp dps dsa dsc dsd dse dsf dsp dss eaa eac ead eae eaf eap eas ec- eca ecc ecd ece ecf ecs ed- eda edc edd ede edf edp eds eea eec eed eee eef eep ees ef- efa efc efd efe eff efp efs ep- epa epc epd epe epf epp eps es- esa esc esd ese esf esp ess faa fac fad fae faf fap fas fca fcc fcd fce fcf fcp fcs fda fdc fdd fde fdf fdp fds fea fec fed fee fef fep fes ffa ffc ffd ffe fff ffp ffs fpa fpc fpd fpe fpp fps fsa fsc fsd fse fsf fsp fss p-p paa pac pad pae paf pap pas pca pcc pcd pce pcf pcp pcs pda pdc pdd pde pdf pdp pds pea pec ped pee pef pep pes pfa pfc pfd pfe pff pfp pfs ppa ppc ppd ppe ppf ppp pps ps- psa psc psd pse psf psp pss saa sac sad sae saf sap sas sca scc scd sce scf scp scs sda sdc sdd sde sdf sdp sds se- sea sec sed see sef sep ses sfa sfc sfd sfe sff sfp sfs spa spc spd spe spf spp sps ss- ssa ssc ssd sse ssf ssp sss