x1 (text) is a zi'evla made of UI cmavos, optional glue, and a rafsi or piece of a gismu; meaning x2 (ka) in language x3.
Examples include iicmo, le'onmo, aidji, and even uirnainmo (ui zei nai zei cinmo). But not iedra, which means "ivy" and not something like ie zei drani: to qualify as a uivla, the meaning needs to be shaped by the parts. Not to be confused with u'ivla, a clever/funny word.