-er a-a aaa aae aak aam aao aar aea aee aek aem aeo aer aka ake akk akm ako akr ama ame amk amm amo amr aoa aoe aok aom aoo aor ar- ara are ark arm aro arr eaa eae eak eam eao ear eea eee eek eem eeo eer eka eke eko ekr em- ema eme emk emm emo emr eo- eoa eoe eok eom eoo eor era ere erk erm ero err ka- kaa kae kak kam kao kar ke- kea kee kek kem keo ker kke kkk kkm kkr kma kme kmk kmm kmo koa koe kok kom koo kor kra krk kro krr m-o m-r maa mae mak mam mao mar mea mee mek mem meo mer mka mke mkk mkm mko mkr mma mme mmk mmm mmo mmr moa moe mok mom moo mor mra mre mrk mrm mro mrr oaa oae oak oam oao oar oea oee oem oeo oer oka oke okk oko okr om- oma ome omm omo omr oo- ooa ook oom ooo oor or- ora ore ork orm oro orr ra- raa rae rak ram rao rar re- rea ree rek rem reo rer rke rkk rkm rko rma rme rmm rmo rmr roa roe rok rom roo ror rra rrk rrm rrr