tutle tutor tutte tutto tutun tuuru u-pop uelen uelfe ufere ufofu ufone ufton ugene uggle ugoff ugong ugro- ugrug ulene ulent ulger ullet ullur ulno- ulong uloop ulpur ulten ulteo ultop ultre ululu uluru un-go unerp unete unfoe unfun unfur unger unget ungle ungon ungot ungul ungur unleg unlet unnet unnun unnur unnut unoft unoor unorn unpeg unpen unpeu unpot unput unref unrep unrol unrug unrun unten unter untop unurn uouee upeet upenn upfor upnor upoff upolo upolu upone uppen upper uppng uppon upput uprun upter upton uptop urelu urent ureo- urgel urger urgun urgut urour urtel urter urtlu urupe urutu utenn uter- utero utole utro- utrop utror utter uttur uturn uturu ututo uunet uuuuu