-er a-a aaa aad aae aag aak aar aas ad- ada add ade adg adk adr ads aea aed aee aeg aek aer aes ag- aga agd age agg agk agr ags aka akd ake akg akk akr aks ar- ara ard are arg ark arr ars as- asa asd ase asg ask asr ass daa dad dae dag dak dar das dda ddd dde ddg ddk ddr dds de- dea ded dee deg dek der des dga dgd dge dgg dgk dgr dgs dka dke dkg dkk dkr dks dra drd dre drg drk drr drs dsa dsd dse dsg dsk dsr dss eaa ead eae eag eak ear eas ed- eda edd ede edg edk edr eds eea eed eee eeg eek eer ees ega egd ege egg egr egs eka ekd eke ekg ekr eks era erd ere erg erk err ers es- esa esd ese esg esk esr ess g-d gaa gad gae gag gak gar gas gda gdd gde gdk gdr gds ge- gea ged gee geg gek ger ges gga ggd ggg ggr ggs gka gkd gks gra grd gre grg grk grr grs gsa gsd gse gsg gsk gsr gss ka- kaa kad kae kag kak kar kas kda kde kdg kdk kdr kds ke- kea ked kee keg kek ker kes kga kgd kgs kke kkk kkr kks kra krd krg krk krr krs ksa ksd kse ksg ksk ksr kss ra- raa rad rae rag rak rar ras rda rdd rde rdg rdr rds re- rea red ree reg rek rer res rga rgd rge rgg rgk rgr rgs rke rkg rkk rks rra rrd rrg rrk rrr rrs rsa rsd rse rsg rsk rsr rss saa sad sae sag sak sar sas sda sdd sde sdg sdk sdr sds se- sea sed see seg sek ser ses sga sgd sge sgg sgk sgr sgs sk- ska skd ske skg skk skr sks sr- sra srd sre srg srk srr srs ss- ssa ssd sse ssg ssk ssr sss