a-a aaa aak aan aar aas aau aka akk akn akr aks aku an- ana ank ann anr ans anu ar- ara ark arn arr ars aru as- asa ask asn asr ass asu au- aua auk aun aur aus ka- kaa kak kan kar kas kau kkk kkn kkr kks kku kn- kna knk knn knr knu kra krk krn krr krs kru ksa ksk ksn ksr kss ksu kuk kun kur kus kuu naa nak nan nar nas nau nka nkk nkn nkr nks nku nna nnk nnn nns nnu nra nrk nrn nrr nrs nru nsa nsk nsn nsr nss nsu nua nuk nun nur nus nuu ra- raa rak ran rar ras rau rkk rks rku rna rnn rnr rns rnu rra rrk rrn rrr rrs rru rsa rsk rsn rsr rss rsu rua ruk run rur rus ruu saa sak san sar sas sau sk- ska skk skr sks sku sna snk snn snr sns snu sr- sra srk srn srr srs ss- ssa ssk ssn ssr sss ssu sua suk sun sur sus suu ua- uaa uak uan uar uas uau uka ukk ukn ukr uku un- una unk unn unr uns unu ur- ura urk urn urr urs uru usa usk usn usr uss usu uua uun uur uus uuu