-er eee eek eer ees eie eii eik eir eis eiu eke eki ekr eks eku eqe eqq eqs equ ere eri erk erq err ers eru es- ese esi esk esq esr ess esu eu- eue eui eur eus ie- iee iei iek ier ies iie iii iir iis iiu ike iki ikk ikr iks iku iqe iqs iqu ir- ire iri irk irq irr irs iru is- ise isi isk isq isr iss isu iu- iue iui iur ius ke- kee kei kek ker kes kie kii kik kir kis kiu kke kki kkk kkr kks kku kri krk krr krs kru kse ksi ksk ksr kss ksu kue kui kuk kur kus kuu qee qie qik qir qis qiu qki qqk qqq qqu qre qri qrs qru qsi qsr qu- que qui qur qus re- ree rei rek req rer res reu rie rii rik riq rir ris rke rkk rks rku rqs rri rrk rrq rrr rrs rru rse rsi rsk rsq rsr rss rsu rue rui ruk rur rus ruu se- see sei sek seq ser ses seu sie sii sik siq sir sis siu sk- ske ski skk skq skr sks sku sqi sqq sqr sqs sr- sre sri srk srq srr srs ss- sse ssi ssk ssq ssr sss ssu sue sui suk suq sur sus suu uee uei uer ues uie uii uiq uir uis uiu uke uki ukk ukr uku ur- ure uri urk urr urs uru use usi usk usr uss usu uue uur uus uuu