bbb bbg bbi bbn bbr bgb bgg bgi bgn bgr bi- bib big bii bin bir bnb bng bni bnn bnr brb brg bri brn brr gbg gbi gbn gbr ggb ggg ggi ggn ggr gib gig gii gin gir gnb gni gnn gnr grb grg gri grn grr ibb ibg ibi ibn ibr igb igg igi ign igr iib iii iin iir in- inb ing ini inn inr ir- irb irg iri irn irr n-i nbb nbg nbi nbn nbr ngb ngg ngi ngn nib nig nii nin nir nnb nng nni nnn nrb nrg nri nrn nrr rbb rbg rbi rbn rbr rgb rgg rgi rgn rgr rib rig rii rin rir rnb rng rni rnn rnr rrb rrg rri rrn rrr