bbb bbf bbg bbi bbl bbn bbr bfb bff bfg bfi bfl bfn bfr bgb bgf bgg bgi bgl bgn bgr bi- bib bif big bii bil bin bir blb blf blg bli bll bln blr bnb bnf bng bni bnl bnn bnr brb brf brg bri brl brn brr fbb fbf fbg fbi fbl fbn fbr fff ffg ffi ffl ffn ffr fgb fgf fgg fgi fgl fgn fgr fib fif fig fii fil fin fir flb flf flg fli fll fln flr fnb fnf fng fni fnl fnn fnr frb frf frg fri frl frn frr gbf gbg gbi gbl gbn gbr gfb gff gfi gfl gfr ggb ggg ggi ggn ggr gib gif gig gii gil gin gir glb glf glg gli gll gln glr gnb gnf gni gnl gnn gnr grb grf grg gri grl grn grr i-f ibb ibf ibg ibi ibl ibn ibr ifb iff ifg ifi ifl ifn ifr igb igf igg igi igl ign igr iib iif iii iil iin iir il- ilb ilf ilg ili ill iln ilr in- inb inf ing ini inl inn inr ir- irb irf irg iri irl irn irr lbb lbf lbg lbi lbl lbr lfb lff lfg lfi lfl lfn lfr lgb lgf lgg lgi lgl lgn lgr lib lif lig lii lil lin lir llb llf llg lli lll lln llr lnb lng lni lnl lnn lnr lrb lrf lrg lri lrn lrr n-i nbb nbf nbg nbi nbl nbn nbr nfb nff nfi nfl nfn nfr ngb ngf ngg ngi ngl ngn nib nif nig nii nil nin nir nlb nlf nlg nli nll nln nlr nnb nnf nng nni nnl nnn nrb nrf nrg nri nrl nrn nrr rbb rbf rbg rbi rbl rbn rbr rfb rff rfg rfi rfl rfn rfr rgb rgf rgg rgi rgn rgr rib rif rig rii ril rin rir rlf rlg rli rll rln rlr rnb rng rni rnn rnr rrb rrf rrg rri rrl rrn rrr