-ol fff ffg ffi ffk ffl ffo ffs fgf fgg fgi fgl fgs fif fig fii fik fil fis fkf fkg fki fkk fkl flf flg fli fll flo fls fof fog foi fok fol foo fos fsf fsg fsi fsk fsl fso fss gff gfi gfk gfl gfo gfs ggg ggi ggo ggs gif gig gii gik gil gio gis gko gks glf glg gli glk gll glo gls gof gog goi gok gol goo gos gsf gsg gsi gsk gsl gso gss i-f iff ifg ifi ifl ifo ifs igf igg igi igk igl igo igs iif iii iil iio iis ikf iki ikk ikl iko iks il- ilf ilg ili ilk ill ilo ils io- iof iog ioi iol ioo ios is- isf isg isi isk isl iso iss kff kfg kfi kfo kfs kgf kgi kgl kgo kgs kif kig kii kik kil kio kis kki kkk kkl kks kl- klf klg kli klo kls kof kog koi kok kol koo kos ksf ksg ksi ksk ksl kso kss lff lfg lfi lfk lfl lfo lfs lgf lgg lgi lgk lgl lgo lgs lif lig lii lik lil lio lis lkg lkl lks llf llg lli llk lll llo lls lof log loi lok lol loo los lsf lsg lsi lsk lsl lso lss o-i of- off ofg ofi ofl ofo ofs ogf ogg ogi ogl ogo ogs oif oii oik oil oio ois okg oki okk okl oko oks olf olg oli olk oll olo ols oo- oof oog ooi ook ool ooo oos os- osf osg osi osk osl oso oss sff sfg sfi sfk sfl sfo sfs sgf sgg sgi sgk sgl sgo sgs sif sig sii sik sil sio sis sk- skf skg ski skk skl sko sks slf slg sli slk sll slo sls sof sog soi sok sol soo sos ss- ssf ssg ssi ssk ssl sso sss