-er a-a aaa aae aak aan aar aas aau aea aee aek aen aer aes aeu aka ake akk akn akr aks aku an- ana ane ank ann anr ans anu ar- ara are ark arn arr ars aru as- asa ase ask asn asr ass asu au- aua aue auk aun aur aus eaa eae eak ean ear eas eau eea eee eek een eer ees eka eke ekr eks eku en- ena ene enk enn enr ens enu era ere erk ern err ers eru es- esa ese esk esn esr ess esu eu- eua eue eun eur eus ka- kaa kae kak kan kar kas kau ke- kea kee kek ken ker kes kke kkk kkn kkr kks kku kn- kna kne knk knn knr knu kra krk krn krr krs kru ksa kse ksk ksn ksr kss ksu kue kuk kun kur kus kuu naa nae nak nan nar nas nau ne- nea nee nek nen ner nes neu nka nke nkk nkn nkr nks nku nna nne nnk nnn nns nnu nra nre nrk nrn nrr nrs nru nsa nse nsk nsn nsr nss nsu nua nue nuk nun nur nus nuu ra- raa rae rak ran rar ras rau re- rea ree rek ren rer res reu rke rkk rks rku rna rnn rnr rns rnu rra rrk rrn rrr rrs rru rsa rse rsk rsn rsr rss rsu rua rue ruk run rur rus ruu saa sae sak san sar sas sau se- sea see sek sen ser ses seu sk- ska ske skk skr sks sku sna sne snk snn snr sns snu sr- sra sre srk srn srr srs ss- ssa sse ssk ssn ssr sss ssu sua sue suk sun sur sus suu ua- uaa uae uak uan uar uas uau uea uee uen uer ues uka uke ukk ukn ukr uku un- una une unk unn unr uns unu ur- ura ure urk urn urr urs uru usa use usk usn usr uss usu uua uue uun uur uus uuu