ffff ffii ffss fftf ffun fiff fifi fift fiii fini finn fins fint fisi fiss fist fisu fiti fits fitt fnuf fsfi fssf ftii fuff fufu fuit funf funs funt fusi fuss fust fusu futi futs futu ifis ifit ifni ifns iftn iiii iiis iiit iisi iist iisu iitt infi infs inis init inni inns innu inss inst insu inti intn ints intu inui inun inus isin isis isit isnt issf issi isss issu isti ists isus itif itin itis itsf itsi itsu ittf iuiu iuss iust n-ii nfff nfsu niff nift niit niiu nini nins nisi niss nist nisu nitf niti nits nnit nnnn nnss nntn nsfs nsin nsis nssf nsss nsts nstu ntfs ntis ntnu ntsf ntss ntsu ntui nuff nuin nuit nunn nuns nunt nusi nuss nust nusu nuts nutt nutu s-ii sfnt sfss sfsu sfts siff sift sifu siit sini sinn sins sint sinu sisi siss sist sisu sit- siti sitn sits sitt situ siui sius siut snfu snit snns snus ssin ssis ssit ssns sssf sssi ssss ssts stfn stfu stif stis stit stnn stns stsf stsi stss stuf stun stus stut suf- suff sufi sufs sufu suin suis suit sun- suni sunn suns sunt sunu sus- susi suss sust susu suti sutu suus tfin tfsi tfss tiff tift tiit tiiu tini tinn tins tint tinu tisi tiss tist titi tits titt titu tnts tnut tsin tsis tssf tssi tsst tsts tsui tsun ttff ttfn ttss tttt tuff tufi tuft tufu tuin tuis tuit tuiu tuni tunn tuns tunu tusi tuss tust tuti tuts tutt tutu uint uist uits uni- unif unii unin unis unit unni unns uns- unst unts unus unut usfi usfs usif usin usis usnu ussf usss usst ussu usti usts usui usun usus utin utis utti uttu uuni uusi uutf uuuu