b-u bbb bbg bbi bbn bbu bby bgb bgg bgi bgn bgu bi- bib big bii bin biu biy bnb bng bni bnn bnu bub bug bui bun buu buy by- byg byi byn byu gbg gbi gbn gbu gby ggb ggg ggi ggn ggu gib gig gii gin giu giy gnb gni gnn gnu gu- gub gug gui gun guu guy gy- gyb gyn ibb ibg ibi ibn ibu iby igb igg igi ign igu igy iib iii iin iiu in- inb ing ini inn inu iny iu- iub iug iui iyy n-i nbb nbg nbi nbn nbu ngb ngg ngi ngn ngu nib nig nii nin niu nnb nng nni nnn nnu nub nug nui nun nuu nuy nyg nyn nyu nyy ubb ubg ubi ubn ubu uby ugb ugg ugi ugn ugu uib uig uii uin uiu un- unb ung uni unn unu uny uug uun uuu uyi uyu ybg ybi yby yig yii yin yng ynn ynu yny yug yui yun yuu yuy yyb yyg yyu yyy