f--k ffff ffii ffss fiff fifi fiii fiil fiki fili filk fill fils fisi fisk fiss flii flik flis fsfi fssf ifil ifis iiii iiis iisi ikki ilis ilki ilks ill- illi ills isil isis iskf isls issf issi isss kfff kffk kfil kfis kflf kfli kfll kfls kfsi kfsk kiff kifl kifs kiii kiik kiis kikf kiki kikk kili kilk kill kisf kisi kisk kisl kiss kkfi kkfs kkik kkkk kklf kkli kkll kkls kksf kksi kkss klff klfi klif klik klil klis klkk klkl klks kllk klls klsf klsi ksfi ksif ksii ksik ksil ksis kskf kskk ksks ksli kslk ksll kssi kssl ksss liff lifl liii liis lili lill lils lisi lisk liss lkfs llks llll s-ii sfls sfss siff sifl siik siki siks sil- silf sili silk sill sils sisi sisk siss skif skik skil skis skss sl-i slik ssfl ssis sssf sssi ssss