fff ffi ffk ffm ffn ffs fif fii fik fim fin fis fkf fki fkk fkm fmf fmi fmm fmn fms fnf fni fnk fnm fnn fns fsf fsi fsk fsm fsn fss i-f iff ifi ifm ifn ifs iif iii iim iin iis ikf iki ikk iks im- imf imi imm imn ims in- inf ini ink inm inn ins is- isf isi isk ism isn iss kff kfi kfm kfs kif kii kik kim kin kis kki kkk kkm kkn kks kmf kmi kmk kmm kms kn- knf kni knk knm knn ksf ksi ksk ksm ksn kss m-f mff mfi mfm mfn mfs mi- mif mii mik mim min mis mkk mkm mkn mks mmf mmi mmk mmm mmn mms mnf mni mnk mnm mnn mns msf msi msk msm msn mss n-i nff nfi nfk nfn nfs nif nii nik nim nin nis nkf nki nkk nkm nkn nks nmi nmk nmm nmn nms nnf nni nnk nnm nnn nns nsf nsi nsk nsm nsn nss sff sfi sfk sfm sfn sfs sif sii sik sim sin sis sk- skf ski skk skm sks smf smi smk smm smn sms snf sni snk snm snn sns ss- ssf ssi ssk ssm ssn sss