a-a a-b a-i aaa aab aai aak aan aar aau ab- aba abb abi abk abn abr abu ai- aia aib aii aik ain air aiu aka akb aki akk akn akr aku an- ana anb ani ank ann anr anu ar- ara arb ari ark arn arr aru au- aua aub aui auk aun aur b-u baa bab bai bak ban bar bau bba bbb bbi bbk bbn bbr bbu bi- bia bib bii bik bin bir biu bka bkb bkk bkn bkr bna bnb bni bnk bnn bnr bnu bra brb bri brk brn brr bru bua bub bui buk bun bur buu ia- iaa iab iai ian iar iau iba ibb ibi ibk ibn ibr ibu iia iib iii iin iir iiu ika ikb iki ikk ikr iku in- ina inb ini ink inn inr inu ir- ira irb iri irk irn irr iru iu- iua iub iui iur ka- kaa kab kai kak kan kar kau kba kbb kbi kbk kbn kbr kbu kia kib kii kik kin kir kiu kkb kki kkk kkn kkr kku kn- kna kni knk knn knr knu kra kri krk krn krr kru kub kui kuk kun kur kuu n-i naa nab nai nak nan nar nau nba nbb nbi nbk nbn nbr nbu nia nib nii nik nin nir niu nka nki nkk nkn nkr nku nna nnb nni nnk nnn nnu nra nrb nri nrk nrn nrr nru nua nub nui nuk nun nur nuu ra- raa rab rai rak ran rar rau rba rbb rbi rbk rbn rbr rbu ria rib rii rik rin rir rkb rkk rku rna rnb rni rnn rnr rnu rra rrb rri rrk rrn rrr rru rua rub rui ruk run rur ruu ua- uaa uab uai uak uan uar uau uba ubb ubi ubk ubn ubr ubu uia uib uii uin uir uiu uka ukb uki ukk ukn ukr uku un- una unb uni unk unn unr unu ur- ura urb uri urk urn urr uru uua uun uur uuu