b-u bbb bbi bbn bbq bbu bby bi- bib bii bin biu biy bnb bni bnn bnu bub bui bun buu buy by- byi byn byq byu ibb ibi ibn ibu iby iib iii iin iiu in- inb ini inn inq inu iny iqu iu- iub iui iyy n-i nbb nbi nbn nbu nib nii nin niq niu nnb nni nnn nnu nub nui nun nuq nuu nuy nyn nyu nyy qbq qin qiu qnb qni qqq qqu qu- qui quy ubb ubi ubn ubu uby uib uii uin uiq uiu un- unb uni unn unq unu uny uun uuu uyi uyu ybi yby yii yin yiq ynn ynu yny yqb yui yun yuu yuy yyb yyu yyy