-er a-a aaa aae aag aak aar aea aee aeg aek aer ag- aga age agg agk agr aka ake akg akk akr ar- ara are arg ark arr eaa eae eag eak ear eea eee eeg eek eer ega ege egg egr eka eke ekg ekr era ere erg erk err gaa gae gag gak gar ge- gea gee geg gek ger gga ggg ggr gka gra gre grg grk grr ka- kaa kae kag kak kar ke- kea kee keg kek ker kga kke kkk kkr kra krg krk krr ra- raa rae rag rak rar re- rea ree reg rek rer rga rge rgg rgk rgr rke rkg rkk rra rrg rrk rrr