-er a-a aaa aae aag aak aan aar aas aea aee aeg aek aen aer aes ag- aga age agg agk agn agr ags aka ake akg akk akn akr aks an- ana ane ang ank ann anr ans ar- ara are arg ark arn arr ars as- asa ase asg ask asn asr ass eaa eae eag eak ean ear eas eea eee eeg eek een eer ees ega ege egg egn egr egs eka eke ekg ekr eks en- ena ene eng enk enn enr ens era ere erg erk ern err ers es- esa ese esg esk esn esr ess gaa gae gag gak gan gar gas ge- gea gee geg gek gen ger ges gga ggg ggn ggr ggs gka gkn gks gna gne gnn gnr gns gra gre grg grk grn grr grs gsa gse gsg gsk gsn gsr gss ka- kaa kae kag kak kan kar kas ke- kea kee keg kek ken ker kes kga kgs kke kkk kkn kkr kks kn- kna kne kng knk knn knr kra krg krk krn krr krs ksa kse ksg ksk ksn ksr kss naa nae nag nak nan nar nas ne- nea nee neg nek nen ner nes nga nge ngg ngk ngn ngs nka nke nkk nkn nkr nks nna nne nng nnk nnn nns nra nre nrg nrk nrn nrr nrs nsa nse nsg nsk nsn nsr nss ra- raa rae rag rak ran rar ras re- rea ree reg rek ren rer res rga rge rgg rgk rgn rgr rgs rke rkg rkk rks rna rng rnn rnr rns rra rrg rrk rrn rrr rrs rsa rse rsg rsk rsn rsr rss saa sae sag sak san sar sas se- sea see seg sek sen ser ses sga sge sgg sgk sgn sgr sgs sk- ska ske skg skk skr sks sna sne sng snk snn snr sns sr- sra sre srg srk srn srr srs ss- ssa sse ssg ssk ssn ssr sss