-er a-a aaa aad aae aak aar aas ad- ada add ade adk adr ads aea aed aee aek aer aes aka akd ake akk akr aks ar- ara ard are ark arr ars as- asa asd ase ask asr ass daa dad dae dak dar das dda ddd dde ddk ddr dds de- dea ded dee dek der des dka dke dkk dkr dks dra drd dre drk drr drs dsa dsd dse dsk dsr dss eaa ead eae eak ear eas ed- eda edd ede edk edr eds eea eed eee eek eer ees eka ekd eke ekr eks era erd ere erk err ers es- esa esd ese esk esr ess ka- kaa kad kae kak kar kas kda kde kdk kdr kds ke- kea ked kee kek ker kes kke kkk kkr kks kra krd krk krr krs ksa ksd kse ksk ksr kss ra- raa rad rae rak rar ras rda rdd rde rdr rds re- rea red ree rek rer res rke rkk rks rra rrd rrk rrr rrs rsa rsd rse rsk rsr rss saa sad sae sak sar sas sda sdd sde sdk sdr sds se- sea sed see sek ser ses sk- ska skd ske skk skr sks sr- sra srd sre srk srr srs ss- ssa ssd sse ssk ssr sss