ffff ffii ffss fftf fiff fifi fift fiii fiil fili fill fils fisi fiss fist fiti fits fitt flii flis flit flts fsfi fssf ft-l ftii ifil ifis ifit iiii iiis iiit iisi iist iitt ilis ilit ill- illi ills illt ilts isil isis isit isls issf issi isss isti ists itif itil itis itll itsf itsi ittf lfts liff lifl lift liii liis lili lill lils lilt lisi liss list liti litl lits litt llll lsts ltsi s-ii sfls sfss sfts siff sifl sift siit sil- silf sili sill sils silt sisi siss sist sit- siti sits sitt sl-i slft slit slst slts ssfl ssis ssit sslt sssf sssi ssss sstl ssts stif stil stis stit stlt stsf stsi stss tfsi tfss tiff tift tiit till tils tilt tisi tiss tist titi tits titt tlli tsfl tsis tssf tssi tsst tsts ttff ttss tttt