llll lloo loll lolo lono lonr lont lool loon loor loot lorn loro lotl loto lotr lott loul loun lour lout louu lron lrrr ltnt lttr lull lulu lunn luno lunt lurt nnnn nnot nntn noll nolo nolt non- nonn nono nont nonu noo- nool noon nooo noor noot nor- norn noro norr nort not- noto nott noul noun nour nout nron nrrl nrtl ntnu ntrl ntru ntto nttr null nunn nuno nunt nuon nurl nurn nurr nurt nuru nutt nutu ollo olon olor olot oltu olur onno onon onor ont- onto onur onut oolo oont oooo oort orlo orlu orno oro- oron oror orot orro orto oto- oton otoo otor otro otto ottu otur oulu oun- our- ourn ouro ourt out- outo ouu- rnnt rnot rnut roll rolo rolt rono ront rool roon roor root roro rort roru rotl rotn roto rotr rott roul roun rout rrrr rrun rtlt rull rulo runn runo runt ruro ruru rutl ruto rutt rutu ruun tlon tnut tol- toll tolo tolt tolu tonn tono tonu tool toon toor toot torn toro torr tort toru toto totr tott toul toun tour tout trno tron troo trot trou trtr trun trut truu tton tttt ttul tull tulo tulu tunn tuno tunu tuor turn turo turr turt turu tutl tuto tutt tutu tuuo ullo ullr ulno ulo- ulto ultt ulul unno unon unro unto unut uor- uro- urol uroo urun urur urut utor utto uttu uulu uuno uuuu