fff ffg ffi ffl ffn ffs fft fgf fgg fgi fgl fgn fgs fgt fif fig fii fil fin fis fit flf flg fli fll fln fls flt fnf fng fni fnl fnn fns fnt fsf fsg fsi fsl fsn fss fst ftf ftg fti ftl ftn fts ftt gff gfi gfl gfs gft ggg ggi ggn ggs ggt gif gig gii gil gin gis git glf glg gli gll gln gls glt gnf gni gnl gnn gns gnt gsf gsg gsi gsl gsn gss gst gtf gtg gti gtl gtn gts gtt i-f iff ifg ifi ifl ifn ifs ift igf igg igi igl ign igs igt iif iii iil iin iis iit il- ilf ilg ili ill iln ils ilt in- inf ing ini inl inn ins int is- isf isg isi isl isn iss ist itf itg iti itl itn its itt lff lfg lfi lfl lfn lfs lft lgf lgg lgi lgl lgn lgs lgt lif lig lii lil lin lis lit llf llg lli lll lln lls llt lng lni lnl lnn lns lnt lsf lsg lsi lsl lsn lss lst ltf ltg lti ltl lts ltt n-i nff nfi nfl nfn nfs nft ngf ngg ngi ngl ngn ngs ngt nif nig nii nil nin nis nit nlf nlg nli nll nln nls nlt nnf nng nni nnl nnn nns nnt nsf nsg nsi nsl nsn nss nst ntf ntg nti ntn nts ntt sff sfg sfi sfl sfn sfs sft sgf sgg sgi sgl sgn sgs sgt sif sig sii sil sin sis sit slf slg sli sll sln sls slt snf sng sni snl snn sns snt ss- ssf ssg ssi ssl ssn sss sst stf stg sti stl stn sts stt tff tfg tfi tfl tfn tfs tft tgf tgg tgi tgl tgn tgs tgt tif tig tii til tin tis tit tlf tlg tli tll tln tls tlt tnf tng tni tnl tnn tns tnt tsf tsg tsi tsl tsn tss tst ttf ttg tti ttl ttn tts ttt