b-u bbb bbf bbg bbi bbn bbu bfb bff bfg bfi bfn bfu bgb bgf bgg bgi bgn bgu bi- bib bif big bii bin biu bnb bnf bng bni bnn bnu bub buf bug bui bun buu fbb fbf fbg fbi fbn fbu fff ffg ffi ffn ffu fgb fgf fgg fgi fgn fib fif fig fii fin fiu fnb fnf fng fni fnn fnu fub fuf fug fui fun fuu gbf gbg gbi gbn gbu gfb gff gfi ggb ggg ggi ggn ggu gib gif gig gii gin giu gnb gnf gni gnn gnu gu- gub guf gug gui gun guu i-f ibb ibf ibg ibi ibn ibu ifb iff ifg ifi ifn ifu igb igf igg igi ign igu iib iif iii iin iiu in- inb inf ing ini inn inu iu- iub iug iui n-i nbb nbf nbg nbi nbn nbu nfb nff nfi nfn nfu ngb ngf ngg ngi ngn ngu nib nif nig nii nin niu nnb nnf nng nni nnn nnu nub nug nui nun nuu ubb ubf ubg ubi ubn ubu uff ufg ufi ufn ufu ugb ugf ugg ugi ugn ugu uib uif uig uii uin uiu un- unb unf ung uni unn unu uug uun uuu