fff ffg ffi ffn ffr fgf fgg fgi fgn fgr fif fig fii fin fir fnf fng fni fnn fnr frf frg fri frn frr gff gfi gfr ggg ggi ggn ggr gif gig gii gin gir gnf gni gnn gnr grf grg gri grn grr i-f iff ifg ifi ifn ifr igf igg igi ign igr iif iii iin iir in- inf ing ini inn inr ir- irf irg iri irn irr n-i nff nfi nfn nfr ngf ngg ngi ngn nif nig nii nin nir nnf nng nni nnn nrf nrg nri nrn nrr rff rfg rfi rfn rfr rgf rgg rgi rgn rgr rif rig rii rin rir rng rni rnn rnr rrf rrg rri rrn rrr