a-a aaa aan aar aas aau an- ana ann anr ans anu ar- ara arn arr ars aru as- asa asn asr ass asu au- aua aun aur aus naa nan nar nas nau nna nnn nns nnu nra nrn nrr nrs nru nsa nsn nsr nss nsu nua nun nur nus nuu ra- raa ran rar ras rau rna rnn rnr rns rnu rra rrn rrr rrs rru rsa rsn rsr rss rsu rua run rur rus ruu saa san sar sas sau sna snn snr sns snu sr- sra srn srr srs ss- ssa ssn ssr sss ssu sua sun sur sus suu ua- uaa uan uar uas uau un- una unn unr uns unu ur- ura urn urr urs uru usa usn usr uss usu uua uun uur uus uuu