iiii iiis iiit iisi iist iitt inis init inni inns inss inst inti intn ints isin isis isit isnt issi isss isti ists itin itis itsi n-ii niit nini nins nisi niss nist niti nits nnit nnnn nnss nntn nsin nsis nsss nsts ntis ntss s-ii siit sini sinn sins sint sisi siss sist sit- siti sitn sits sitt snit snns ssin ssis ssit ssns sssi ssss ssts stis stit stnn stns stsi stss tiit tini tinn tins tint tisi tiss tist titi tits titt tnts tsin tsis tssi tsst tsts ttss tttt