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 nitz nnit nnnn nnss nntn nsin nsis nsss nsts ntis ntss nzst s-ii siit sini sinn sins sint sisi siss sist sit- siti sitn sits sitt sitz sizz snit snns ssin ssis ssit ssns sssi ssss ssts stis stit stnn stns stsi stss szin szis szss tiit tini tinn tins tint tisi tiss tist titi tits titt titz tizi tizz tnts tsin tsis tssi tsst tsts ttss tttt tzzt zinn zins zisi zist ziti zits zizi zizz zsss ztst zzzs zzzz