fff ffi ffk ffm ffn ffo ffs fif fii fik fim fin fis fkf fki fkk fkm fmf fmi fmm fmn fmo fms fnf fni fnk fnm fnn fns fof foi fok fom fon foo fos fsf fsi fsk fsm fsn fso fss i-f iff ifi ifm ifn ifo ifs iif iii iim iin iio iis ikf iki ikk iko iks im- imf imi imm imn imo ims in- inf ini ink inm inn ino ins io- iof ioi iom ion ioo ios is- isf isi isk ism isn iso iss kff kfi kfm kfo kfs kif kii kik kim kin kio kis kki kkk kkm kkn kks kmf kmi kmk kmm kmo kms kn- knf kni knk knm knn kno kof koi kok kom kon koo kos ksf ksi ksk ksm ksn kso kss m-f m-o mff mfi mfm mfn mfo mfs mi- mif mii mik mim min mio mis mkk mkm mkn mko mks mmf mmi mmk mmm mmn mmo mms mnf mni mnk mnm mnn mno mns mof moi mok mom mon moo mos msf msi msk msm msn mso mss n-i nff nfi nfk nfn nfo nfs nif nii nik nim nin nio nis nkf nki nkk nkm nkn nko nks nmi nmk nmm nmn nmo nms nnf nni nnk nnm nnn nno nns no- nof noi nok nom non noo nos nsf nsi nsk nsm nsn nso nss o-i of- off ofi ofm ofn ofo ofs oif oii oik oim oin oio ois oki okk oko oks om- omf omi omm omn omo oms on- onf oni onk onn ono ons oo- oof ooi ook oom oon ooo oos os- osf osi osk osm osn oso oss sff sfi sfk sfm sfn sfo sfs sif sii sik sim sin sio sis sk- skf ski skk skm sko sks smf smi smk smm smn smo sms snf sni snk snm snn sno sns sof soi sok som son soo sos ss- ssf ssi ssk ssm ssn sso sss