nnnn nnos nnot nnss nntn non- nonn nono nons nont noo- noon nooo noos noot nos- noss nost not- noto nots nott nsos nsso nsss nsts ntss ntto onno onon onos onso onst ont- onto oons oont oooo ooos oost oots osno osoo osos osso osts oto- oton otoo otos otso otto otts s-os snns snoo snos snot son- sono sons sont soon soos soot soso soss sost sotn soto sots ssns ssot ssss ssts stnn stns ston stoo stos stot stss tnts tonn tono tons toon toos toot toso toss tost toto tots tott tsos tsst tsts tton ttss tttt