llll lloo loll lolo lono lool loon loop lopp lopu loul loun loup louu lppl lull lulu lunn luno lupo lupu luup n-up nnnn noll nolo nolp non- nonn nono nonu noo- nool noon nooo noop noul noun noup nppl null nunn nuno nuon ollo olon onno onon onpu onup oolo oooo opo- opon oppo oulu oun- ouu- plon ploo plop plou plpp plup pnln pnnl pnon pnpo pnpp pnup poll polo polu pono ponp pool poon poop pop- popo popp poul poun poup pplo pppn pppo pppp pull pulo pulp pulu puno punu pupl pupu ullo ulno ulo- ulul unlp unno unon unop uplo upnp upon uppp uppu upup uulu uuno uuuu