-er a-a aaa aae aag aak aan aao aar aea aee aeg aek aen aeo aer ag- aga age agg agk agn ago agr aka ake akg akk akn ako akr an- ana ane ang ank ann ano anr aoa aoe aog aok aon aoo aor ar- ara are arg ark arn aro arr eaa eae eag eak ean eao ear eea eee eeg eek een eeo eer ega ege egg egn ego egr eka eke ekg eko ekr en- ena ene eng enk enn eno enr eo- eoa eoe eog eok eon eoo eor era ere erg erk ern ero err gaa gae gag gak gan gao gar ge- gea gee geg gek gen geo ger gga ggg ggn ggo ggr gka gkn gko gna gne gnn gno gnr goa goe gog gok gon goo gor gra gre grg grk grn gro grr ka- kaa kae kag kak kan kao kar ke- kea kee keg kek ken keo ker kga kgo kke kkk kkn kkr kn- kna kne kng knk knn kno knr koa koe kog kok kon koo kor kra krg krk krn kro krr naa nae nag nak nan nao nar ne- nea nee neg nek nen neo ner nga nge ngg ngk ngn ngo nka nke nkk nkn nko nkr nna nne nng nnk nnn nno no- noa noe nog nok non noo nor nra nre nrg nrk nrn nro nrr oaa oae oag oak oan oao oar oea oee oeg oen oeo oer oga oge ogg ogn ogo oka oke okg okk oko okr on- ona one ong onk onn ono onr oo- ooa oog ook oon ooo oor or- ora ore org ork orn oro orr ra- raa rae rag rak ran rao rar re- rea ree reg rek ren reo rer rga rge rgg rgk rgn rgo rgr rke rkg rkk rko rna rng rnn rno rnr roa roe rog rok ron roo ror rra rrg rrk rrn rrr