f--k ffff ffii ffss fftf fiff fifi fift fiii fiil fiki fili filk fill fils fisi fisk fiss fist fiti fits fitt flii flik flis flit fltk flts fsfi fssf ft-l ftii ifil ifis ifit iiii iiis iiit iisi iist iitt ikki ilis ilit ilki ilks ill- illi ills illt ilts isil isis isit iskf isls issf issi isss isti ists itif itil itis itll itsf itsi ittf kfff kffk kfil kfis kfit kflf kfli kfll kfls kflt kfsi kfsk kfst kfti kftk kftt kiff kifl kifs kift kiii kiik kiis kiit kikf kiki kikk kikt kili kilk kill kilt kisf kisi kisk kisl kiss kist kiti kitl kits kitt kkfi kkfs kkft kkik kkit kkkk kklf kkli kkll kkls kksf kksi kkss kkst kktk kktl kkts klff klfi klft klif klik klil klis klit klkk klkl klks kllk klls klsf klsi klst kltf klti kltk kltt ksfi ksft ksif ksii ksik ksil ksis ksit kskf kskk ksks ksli kslk ksll kslt kssi kssl ksss ksst ksti kstk kstl ksts kstt ktfi ktfl ktfs ktik ktil ktis ktkk ktks ktkt ktlf ktli ktlk ktlt ktsf ktsl ktst kttf ktti kttk ktts kttt lfts liff lifl lift liii liis lili lill lils lilt lisi lisk liss list liti litl lits litt lkfs llks llll lsts ltsi s-ii sfls sfss sfts siff sifl sift siik siit siki siks sil- silf sili silk sill sils silt sisi sisk siss sist sit- siti sits sitt skif skik skil skis skit skss sl-i slft slik slit slst slts ssfl ssis ssit sslt sssf sssi ssss sstl ssts stif stik stil stis stit stks stlt stsf stsi stss tfsi tfss tiff tift tiit tiki till tils tilt tisi tiss tist titi tits titt tkts tlik tlli tsfl tsis tsks tssf tssi tsst tsts ttff ttss tttt