a-a a-b a-i aaa aab aai aan aau ab- aba abb abi abn abu ai- aia aib aii ain aiu an- ana anb ani ann anu au- aua aub aui aun b-u baa bab bai ban bau bba bbb bbi bbn bbu bi- bia bib bii bin biu bna bnb bni bnn bnu bua bub bui bun buu ia- iaa iab iai ian iau iba ibb ibi ibn ibu iia iib iii iin iiu in- ina inb ini inn inu iu- iua iub iui n-i naa nab nai nan nau nba nbb nbi nbn nbu nia nib nii nin niu nna nnb nni nnn nnu nua nub nui nun nuu ua- uaa uab uai uan uau uba ubb ubi ubn ubu uia uib uii uin uiu un- una unb uni unn unu uua uun uuu