-er a-a aaa aad aae aaf aak aap aar aas ad- ada add ade adf adk adp adr ads aea aed aee aef aek aep aer aes af- afa afd afe aff afk afp afr afs aka akd ake akk akp akr aks ap- apa apd ape apf apk app apr aps ar- ara ard are arf ark arp arr ars as- asa asd ase asf ask asp asr ass daa dad dae daf dak dap dar das dda ddd dde ddf ddk ddp ddr dds de- dea ded dee def dek dep der des dfa dfd dfe dff dfk dfp dfr dfs dka dke dkk dkp dkr dks dpa dpd dpe dpf dpk dpp dpr dps dra drd dre drk drp drr drs dsa dsd dse dsf dsk dsp dsr dss eaa ead eae eaf eak eap ear eas ed- eda edd ede edf edk edp edr eds eea eed eee eef eek eep eer ees ef- efa efd efe eff efp efr efs eka ekd eke ekf ekp ekr eks ep- epa epd epe epf epp epr eps era erd ere erf erk erp err ers es- esa esd ese esf esk esp esr ess faa fad fae faf fak fap far fas fda fdd fde fdf fdk fdp fdr fds fea fed fee fef fek fep fer fes ffa ffd ffe fff ffk ffp ffr ffs fka fkf fkk fkp fpa fpd fpe fpk fpp fpr fps fra frd fre frf frk frp frr frs fsa fsd fse fsf fsk fsp fsr fss ka- kaa kad kae kaf kak kap kar kas kda kde kdf kdk kdp kdr kds ke- kea ked kee kef kek kep ker kes kfa kfd kff kfs kke kkk kkp kkr kks kpa kpd kpe kpf kpk kpp kpr kps kra krd krf krk krp krr krs ksa ksd kse ksf ksk ksp ksr kss p-p paa pad pae paf pak pap par pas pda pdd pde pdf pdk pdp pdr pds pea ped pee pef pek pep per pes pfa pfd pfe pff pfk pfp pfr pfs pka pkd pke pkf pkp pkr pks ppa ppd ppe ppf ppk ppp ppr pps pra prd pre prf prk prp prr prs ps- psa psd pse psf psk psp psr pss ra- raa rad rae raf rak rap rar ras rda rdd rde rdf rdp rdr rds re- rea red ree ref rek rep rer res rfa rfd rfe rff rfk rfp rfr rfs rke rkf rkk rkp rks rpa rpd rpe rpf rpk rpp rpr rps rra rrd rrf rrk rrp rrr rrs rsa rsd rse rsf rsk rsp rsr rss saa sad sae saf sak sap sar sas sda sdd sde sdf sdk sdp sdr sds se- sea sed see sef sek sep ser ses sfa sfd sfe sff sfk sfp sfr sfs sk- ska skd ske skf skk skp skr sks spa spd spe spf spk spp spr sps sr- sra srd sre srf srk srp srr srs ss- ssa ssd sse ssf ssk ssp ssr sss