fff ffg ffi ffn ffs ffz fgf fgg fgi fgn fgs fgz fif fig fii fin fis fiz fnf fng fni fnn fns fnz fsf fsg fsi fsn fss gff gfi gfs gfz ggg ggi ggn ggs ggz gif gig gii gin gis giz gnf gni gnn gns gsf gsg gsi gsn gss i-f iff ifg ifi ifn ifs ifz igf igg igi ign igs iif iii iin iis in- inf ing ini inn ins is- isf isg isi isn iss izi izz n-i nff nfi nfn nfs ngf ngg ngi ngn ngs nif nig nii nin nis niz nnf nng nni nnn nns nnz nsf nsg nsi nsn nss nsz nzf nzg nzi nzs nzz sff sfg sfi sfn sfs sfz sgf sgg sgi sgn sgs sif sig sii sin sis snf sng sni snn sns ss- ssf ssg ssi ssn sss ssz szi z-g zfn zfs zgg zgi zgs zif zig zin zis ziz znn zns zsg zsi zsz zzs zzz