-er a-a aaa aae aan aao aar aau aea aee aen aeo aer aeu an- ana ane ann ano anr anu aoa aoe aon aoo aor aou ar- ara are arn aro arr aru au- aua aue aun auo aur eaa eae ean eao ear eau eea eee een eeo eer en- ena ene enn eno enr enu eo- eoa eoe eon eoo eor eou era ere ern ero err eru eu- eua eue eun eur naa nae nan nao nar nau ne- nea nee nen neo ner neu nna nne nnn nno nnu no- noa noe non noo nor nou nra nre nrn nro nrr nru nua nue nun nuo nur nuu oaa oae oan oao oar oau oea oee oen oeo oer on- ona one onn ono onr onu oo- ooa oon ooo oor or- ora ore orn oro orr oru ou- oua oue oun ouo our ra- raa rae ran rao rar rau re- rea ree ren reo rer reu rna rnn rno rnr rnu roa roe ron roo ror rou rra rrn rrr rru rua rue run ruo rur ruu ua- uaa uae uan uao uar uau uea uee uen uer un- una une unn uno unr unu uoa uoe uon uoo uor ur- ura ure urn uro urr uru uua uue uun uur uuu