fff ffg ffi ffl ffr fgf fgg fgi fgl fgr fif fig fii fil fir flf flg fli fll flr frf frg fri frl frr gff gfi gfl gfr ggg ggi ggr gif gig gii gil gir glf glg gli gll glr grf grg gri grl grr i-f iff ifg ifi ifl ifr igf igg igi igl igr iif iii iil iir il- ilf ilg ili ill ilr ir- irf irg iri irl irr lff lfg lfi lfl lfr lgf lgg lgi lgl lgr lif lig lii lil lir llf llg lli lll llr lrf lrg lri lrr rff rfg rfi rfl rfr rgf rgg rgi rgr rif rig rii ril rir rlf rlg rli rll rlr rrf rrg rri rrl rrr