b-u bbb bbf bbi bbl bbn bbu bfb bff bfi bfl bfn bfu bi- bib bif bii bil bin biu blb blf bli bll bln blu bnb bnf bni bnl bnn bnu bub buf bui bul bun buu fbb fbf fbi fbl fbn fbu fff ffi ffl ffn ffu fib fif fii fil fin fiu flb flf fli fll fln flu fnb fnf fni fnl fnn fnu fub fuf fui ful fun fuu i-f ibb ibf ibi ibl ibn ibu ifb iff ifi ifl ifn ifu iib iif iii iil iin iiu il- ilb ilf ili ill iln ilu in- inb inf ini inl inn inu iu- iub iui lbb lbf lbi lbl lbu lfb lff lfi lfl lfn lfu lib lif lii lil lin liu llb llf lli lll lln llu lnb lni lnl lnn lnu lub luf lui lul lun luu n-i nbb nbf nbi nbl nbn nbu nfb nff nfi nfl nfn nfu nib nif nii nil nin niu nlb nlf nli nll nln nlu nnb nnf nni nnl nnn nnu nub nui nul nun nuu ubb ubf ubi ubl ubn ubu uff ufi ufl ufn ufu uib uif uii uil uin uiu ulb ulf uli ull uln ulu un- unb unf uni unl unn unu uun uuu