fff ffg ffi ffl ffr ffs fgf fgg fgi fgl fgr fgs fif fig fii fil fir fis flf flg fli fll flr fls frf frg fri frl frr frs fsf fsg fsi fsl fsr fss gff gfi gfl gfr gfs ggg ggi ggr ggs gif gig gii gil gir gis glf glg gli gll glr gls grf grg gri grl grr grs gsf gsg gsi gsl gsr gss i-f iff ifg ifi ifl ifr ifs igf igg igi igl igr igs iif iii iil iir iis il- ilf ilg ili ill ilr ils ir- irf irg iri irl irr irs is- isf isg isi isl isr iss lff lfg lfi lfl lfr lfs lgf lgg lgi lgl lgr lgs lif lig lii lil lir lis llf llg lli lll llr lls lrf lrg lri lrr lrs lsf lsg lsi lsl lsr lss rff rfg rfi rfl rfr rfs rgf rgg rgi rgr rgs rif rig rii ril rir ris rlf rlg rli rll rlr rls rrf rrg rri rrl rrr rrs rsf rsg rsi rsl rsr rss sff sfg sfi sfl sfr sfs sgf sgg sgi sgl sgr sgs sif sig sii sil sir sis slf slg sli sll slr sls sr- srf srg sri srl srr srs ss- ssf ssg ssi ssl ssr sss