-er a-a aaa aad aae aak aao aap aar aas ad- ada add ade adk ado adp adr ads aea aed aee aek aeo aep aer aes aka akd ake akk ako akp akr aks aoa aod aoe aok aoo aop aor aos ap- apa apd ape apk apo app apr aps ar- ara ard are ark aro arp arr ars as- asa asd ase ask aso asp asr ass daa dad dae dak dao dap dar das dda ddd dde ddk ddo ddp ddr dds de- dea ded dee dek deo dep der des dka dke dkk dko dkp dkr dks doa dod doe dok doo dop dor dos dpa dpd dpe dpk dpo dpp dpr dps dra drd dre drk dro drp drr drs dsa dsd dse dsk dso dsp dsr dss eaa ead eae eak eao eap ear eas ed- eda edd ede edk edo edp edr eds eea eed eee eek eeo eep eer ees eka ekd eke eko ekp ekr eks eo- eoa eod eoe eok eoo eop eor eos ep- epa epd epe epo epp epr eps era erd ere erk ero erp err ers es- esa esd ese esk eso esp esr ess ka- kaa kad kae kak kao kap kar kas kda kde kdk kdo kdp kdr kds ke- kea ked kee kek keo kep ker kes kke kkk kkp kkr kks koa kod koe kok koo kop kor kos kpa kpd kpe kpk kpo kpp kpr kps kra krd krk kro krp krr krs ksa ksd kse ksk kso ksp ksr kss oaa oad oae oak oao oap oar oas oda odd ode odo odp odr ods oea oed oee oeo oep oer oes oka okd oke okk oko okp okr oks oo- ooa ood ook ooo oop oor oos op- opa opd ope opk opo opp opr ops or- ora ord ore ork oro orp orr ors os- osa osd ose osk oso osp osr oss p-p paa pad pae pak pao pap par pas pda pdd pde pdk pdo pdp pdr pds pea ped pee pek peo pep per pes pka pkd pke pko pkp pkr pks poa pod poe pok poo pop por pos ppa ppd ppe ppk ppo ppp ppr pps pra prd pre prk pro prp prr prs ps- psa psd pse psk pso psp psr pss ra- raa rad rae rak rao rap rar ras rda rdd rde rdo rdp rdr rds re- rea red ree rek reo rep rer res rke rkk rko rkp rks roa rod roe rok roo rop ror ros rpa rpd rpe rpk rpo rpp rpr rps rra rrd rrk rrp rrr rrs rsa rsd rse rsk rso rsp rsr rss saa sad sae sak sao sap sar sas sda sdd sde sdk sdo sdp sdr sds se- sea sed see sek seo sep ser ses sk- ska skd ske skk sko skp skr sks soa sod soe sok soo sop sor sos spa spd spe spk spo spp spr sps sr- sra srd sre srk sro srp srr srs ss- ssa ssd sse ssk sso ssp ssr sss