u-nii u-pml u-pop ucgun uclid ucoii uconn udol udoll udpgt udult udupi ugong uimid uinic uitti ulcot uldin ulguc ullin ulmic ulmin ulno- uloid ulong uloop ulpic ultio ultop ululu ulupi uluti umido uminn umong umpig umudu un-go unccd uncin uncod uncol uncon uncup uncut undid undig undim undit undog undug undun ungci ungig ungld ungli ungod ungon ungot ungud ungul ungum unico unido unigo unini uninn union unipi uniti unlid unlit unltd unmol unnim unnun unnut unodc unoil unold unpin unpot unput until untop up-do upcot upcut updoc updog upido uplit upmod upnim upolo upolu uppli uppng uppon upput upton uptop utili uting ututo uuuuu