Complex sentence: The first groups of Semites that moved northward already developed the early Semitic names derived from triliteral and sometimes a quadriliteral verb root that first appeared in early (now extinct) East Semitic languages, especially Akkadian, Assyrian, and Old Babylonian.
Split into simpler sentences: The first groups of Semitic speakers that moved northward already developed the early Semitic names derived from triliteral and sometimes a quadriliteral verb root. These appellations first appeared in early (now extinct) East Semitic languages, especially Akkadian, Assyrian, and Old Babylonian.