bbb bbf bbi bbl bbn bbr bfb bff bfi bfl bfn bfr bi- bib bif bii bil bin bir blb blf bli bll bln blr bnb bnf bni bnl bnn bnr brb brf bri brl brn brr fbb fbf fbi fbl fbn fbr fff ffi ffl ffn ffr fib fif fii fil fin fir flb flf fli fll fln flr fnb fnf fni fnl fnn fnr frb frf fri frl frn frr i-f ibb ibf ibi ibl ibn ibr ifb iff ifi ifl ifn ifr iib iif iii iil iin iir il- ilb ilf ili ill iln ilr in- inb inf ini inl inn inr ir- irb irf iri irl irn irr lbb lbf lbi lbl lbr lfb lff lfi lfl lfn lfr lib lif lii lil lin lir llb llf lli lll lln llr lnb lni lnl lnn lnr lrb lrf lri lrn lrr n-i nbb nbf nbi nbl nbn nbr nfb nff nfi nfl nfn nfr nib nif nii nil nin nir nlb nlf nli nll nln nlr nnb nnf nni nnl nnn nrb nrf nri nrl nrn nrr rbb rbf rbi rbl rbn rbr rfb rff rfi rfl rfn rfr rib rif rii ril rin rir rlf rli rll rln rlr rnb rni rnn rnr rrb rrf rri rrl rrn rrr