ffff ffii ffss fftf fiff fifi fift fiii fini finn fins fint fisi fiss fist fiti fits fitt fsfi fssf ftii ifis ifit ifni ifns iftn iiii iiis iiit iisi iist iitt infi infs inis init inni inns inss inst inti intn ints isin isis isit isnt issf issi isss isti ists itif itin itis itsf itsi ittf n-ii nfff niff nift niit nini nins nisi niss nist nitf niti nits nnit nnnn nnss nntn nsfs nsin nsis nssf nsss nsts ntfs ntis ntsf ntss s-ii sfnt sfss sfts siff sift siit sini sinn sins sint sisi siss sist sit- siti sitn sits sitt snit snns ssin ssis ssit ssns sssf sssi ssss ssts stfn stif stis stit stnn stns stsf stsi stss tfin tfsi tfss tiff tift tiit tini tinn tins tint tisi tiss tist titi tits titt tnts tsin tsis tssf tssi tsst tsts ttff ttfn ttss tttt