-er a-a a-i aaa aae aag aai aak aao aar aea aee aeg aei aek aeo aer ag- aga age agg agi agk ago agr ai- aia aie aig aii aik aio air aka ake akg aki akk ako akr aoa aoe aog aoi aok aoo aor ar- ara are arg ari ark aro arr eaa eae eag eai eak eao ear eea eee eeg eek eeo eer ega ege egg egi ego egr eia eie eig eii eik eio eir eka eke ekg eki eko ekr eo- eoa eoe eog eoi eok eoo eor era ere erg eri erk ero err gaa gae gag gai gak gao gar ge- gea gee geg gei gek geo ger gga ggg ggi ggo ggr gia gie gig gii gik gio gir gka gko goa goe gog goi gok goo gor gra gre grg gri grk gro grr ia- iaa iae iag iai iao iar ie- iea iee ieg iei iek ier iga ige igg igi igk igo igr iia iie iii iio iir ika ike iki ikk iko ikr io- ioa ioe iog ioi ioo ior ir- ira ire irg iri irk iro irr ka- kaa kae kag kai kak kao kar ke- kea kee keg kei kek keo ker kga kgi kgo kia kie kig kii kik kio kir kke kki kkk kkr koa koe kog koi kok koo kor kra krg kri krk kro krr o-i oaa oae oag oai oak oao oar oea oee oeg oei oeo oer oga oge ogg ogi ogo oia oie oii oik oio oir oka oke okg oki okk oko okr oo- ooa oog ooi ook ooo oor or- ora ore org ori ork oro orr ra- raa rae rag rai rak rao rar re- rea ree reg rei rek reo rer rga rge rgg rgi rgk rgo rgr ria rie rig rii rik rio rir rke rkg rkk rko roa roe rog roi rok roo ror rra rrg rri rrk rrr