nnnn nnot nntn non- nonn nono nont nonu noo- noon nooo noor noot nor- norn noro norr nort not- noto nott noun nour nout nron ntnu ntru ntto nttr nunn nuno nunt nuon nurn nurr nurt nuru nutt nutu onno onon onor ont- onto onur onut oont oooo oort orno oro- oron oror orot orro orto oto- oton otoo otor otro otto ottu otur oun- our- ourn ouro ourt out- outo ouu- rnnt rnot rnut rono ront roon roor root roro rort roru rotn roto rotr rott roun rout rrrr rrun runn runo runt ruro ruru ruto rutt rutu ruun tnut tonn tono tonu toon toor toot torn toro torr tort toru toto totr tott toun tour tout trno tron troo trot trou trtr trun trut truu tton tttt tunn tuno tunu tuor turn turo turr turt turu tuto tutt tutu tuuo unno unon unro unto unut uor- uro- uroo urun urur urut utor utto uttu uuno uuuu