-er a-a aaa aad aae aak aap aar aas ad- ada add ade adk adp adr ads aea aed aee aek aep aer aes aka akd ake akk akp akr aks ap- apa apd ape apk app apr aps ar- ara ard are ark arp arr ars as- asa asd ase ask asp asr ass daa dad dae dak dap dar das dda ddd dde ddk ddp ddr dds de- dea ded dee dek dep der des dka dke dkk dkp dkr dks dpa dpd dpe dpk dpp dpr dps dra drd dre drk drp drr drs dsa dsd dse dsk dsp dsr dss eaa ead eae eak eap ear eas ed- eda edd ede edk edp edr eds eea eed eee eek eep eer ees eka ekd eke ekp ekr eks ep- epa epd epe epp epr eps era erd ere erk erp err ers es- esa esd ese esk esp esr ess ka- kaa kad kae kak kap kar kas kda kde kdk kdp kdr kds ke- kea ked kee kek kep ker kes kke kkk kkp kkr kks kpa kpd kpe kpk kpp kpr kps kra krd krk krp krr krs ksa ksd kse ksk ksp ksr kss p-p paa pad pae pak pap par pas pda pdd pde pdk pdp pdr pds pea ped pee pek pep per pes pka pkd pke pkp pkr pks ppa ppd ppe ppk ppp ppr pps pra prd pre prk prp prr prs ps- psa psd pse psk psp psr pss ra- raa rad rae rak rap rar ras rda rdd rde rdp rdr rds re- rea red ree rek rep rer res rke rkk rkp rks rpa rpd rpe rpk rpp rpr rps rra rrd rrk rrp rrr rrs rsa rsd rse rsk rsp rsr rss saa sad sae sak sap sar sas sda sdd sde sdk sdp sdr sds se- sea sed see sek sep ser ses sk- ska skd ske skk skp skr sks spa spd spe spk spp spr sps sr- sra srd sre srk srp srr srs ss- ssa ssd sse ssk ssp ssr sss