a-a aaa aaf aak aan aar aau af- afa aff afk afn afr afu aka akk akn akr aku an- ana anf ank ann anr anu ar- ara arf ark arn arr aru au- aua auf auk aun aur faa faf fak fan far fau ffa fff ffk ffn ffr ffu fka fkf fkk fna fnf fnk fnn fnr fnu fra frf frk frn frr fru fua fuf fuk fun fur fuu ka- kaa kaf kak kan kar kau kfa kff kfu kkk kkn kkr kku kn- kna knf knk knn knr knu kra krf krk krn krr kru kuk kun kur kuu naa naf nak nan nar nau nfa nff nfk nfn nfr nfu nka nkf nkk nkn nkr nku nna nnf nnk nnn nnu nra nrf nrk nrn nrr nru nua nuk nun nur nuu ra- raa raf rak ran rar rau rfa rff rfk rfn rfr rfu rkf rkk rku rna rnn rnr rnu rra rrf rrk rrn rrr rru rua ruf ruk run rur ruu ua- uaa uaf uak uan uar uau ufa uff ufn ufr ufu uka ukf ukk ukn ukr uku un- una unf unk unn unr unu ur- ura urf urk urn urr uru uua uun uur uuu