tumb tume tumi tumu turb ture turf turi turm turr turt turu tute tuti tutl tutt tutu tuum u-ie ubbe ubbi uber ubet ubii ubir ubit uble ubli ubtf ueir uele ueli uell ufel ufer uffe uile uiml uirr uleb ulee ulfe ulft ulie ulim ulle ulli ullr ulme ulmi ulmu ulti ultt ulul ulum umb- umbe umbi umer umet umff umit umri umut urbe urbi ure- uret urfe urff urfi urft urib urie urif urim uriu urle urmi urre urri urte urum urur urut utel uter util utmb utri utti uttu uulu uuri uutf uuuu