eee eef eeg een ees ef- efe eff efg efi efs ege egf egg egi egn egs eie eif eig eii ein eis en- ene enf eng eni enn ens es- ese esf esg esi esn ess fee fef feg fei fen fes ffe fff ffg ffi ffn ffs fge fgf fgg fgi fgn fgs fie fif fig fii fin fis fne fnf fng fni fnn fns fse fsf fsg fsi fsn fss ge- gee gef geg gei gen ges gfe gff gfi gfs ggg ggi ggn ggs gie gif gig gii gin gis gne gnf gni gnn gns gse gsf gsg gsi gsn gss i-f ie- iee ief ieg iei ien ies ife iff ifg ifi ifn ifs ige igf igg igi ign igs iie iif iii iin iis in- ine inf ing ini inn ins is- ise isf isg isi isn iss n-i ne- nee nef neg nei nen nes nfe nff nfi nfn nfs nge ngf ngg ngi ngn ngs nie nif nig nii nin nis nne nnf nng nni nnn nns nse nsf nsg nsi nsn nss se- see sef seg sei sen ses sfe sff sfg sfi sfn sfs sge sgf sgg sgi sgn sgs sie sif sig sii sin sis sne snf sng sni snn sns ss- sse ssf ssg ssi ssn sss