a-a aaa aaf aak aan aao aar aau af- afa aff afk afn afo afr afu aka akk akn ako akr aku an- ana anf ank ann ano anr anu aoa aof aok aon aoo aor aou ar- ara arf ark arn aro arr aru au- aua auf auk aun auo aur faa faf fak fan fao far fau ffa fff ffk ffn ffo ffr ffu fka fkf fkk fna fnf fnk fnn fnr fnu foa fof fok fon foo for fou fra frf frk frn fro frr fru fua fuf fuk fun fuo fur fuu ka- kaa kaf kak kan kao kar kau kfa kff kfo kfu kkk kkn kkr kku kn- kna knf knk knn kno knr knu koa kof kok kon koo kor kou kra krf krk krn kro krr kru kuk kun kur kuu naa naf nak nan nao nar nau nfa nff nfk nfn nfo nfr nfu nka nkf nkk nkn nko nkr nku nna nnf nnk nnn nno nnu no- noa nof nok non noo nor nou nra nrf nrk nrn nro nrr nru nua nuk nun nuo nur nuu oaa oaf oak oan oao oar oau of- ofa off ofn ofo ofr ofu oka okk oko okr oku on- ona onf onk onn ono onr onu oo- ooa oof ook oon ooo oor or- ora orf ork orn oro orr oru ou- oua ouf ouk oun ouo our ra- raa raf rak ran rao rar rau rfa rff rfk rfn rfo rfr rfu rkf rkk rko rku rna rnn rno rnr rnu roa rof rok ron roo ror rou rra rrf rrk rrn rrr rru rua ruf ruk run ruo rur ruu ua- uaa uaf uak uan uao uar uau ufa uff ufn ufo ufr ufu uka ukf ukk ukn ukr uku un- una unf unk unn uno unr unu uoa uok uon uoo uor ur- ura urf urk urn uro urr uru uua uun uur uuu