ffff ffii ffps ffss fiff fifi fiii fiil fili fill fils fipp fips fisi fiss flii flip flis fsfi fspf fssf fssp ifil ifis ifps ifsp iiii iiis iipf iisi iisp ilis ill- illi illp ills ipil ippf ipsi ipsp ipss isfp isil isis isls ispf isps issf issi issp isss liff lifl liii liis lili lill lils lip- lipi lipl lipp lips lisi lisp liss llll llps lpfp lppl lpss lspl lssp pfff pfis pfli pfps piff pifs piip pil- pili pill pils pipi pipp pips pisi piss plff plif plip plis plpp plsi plss ppif ppli pppp ppps ppsf ppss psfs psil psip psis pspi pspp psps s-ii sfls sfss siff sifl sil- silf sili sill sils sipi sipp sips sisi siss sl-i slip sllp slpi slpp slps spfs spip spis splp spls sppf spps spsp spss ssfl ssfp ssis sslp sspf sspl ssps sssf sssi ssss