tutsi tutti tutun tutus tuuri tuuru u-n-i u-nii uchuu uh-uh uhhuh uhnin uhtri uhuhs uhuru uinic uispp uisun uitti uncin uncts uncup uncus uncut unhip unhit unics unini uninn unipi unish unisi uniti units unius unnun unnur unnut unpin unput unric unrip unruh unrun unsin unstr unsu unsui unsun unurn upcut upput uprun upshi upsun uric- urich urin- urins urist urith urphi urpin urric urris urshu ursus urucu uruit ururi urusi uruti urutu us-sc uscup uship ushis ushnu ushus usini usins usnic usnin uspis ussun ustic ustin ustup ustur usurp ususi usutu uttur uturn uturu uunsi uusis uuuuu