Could you help me to understand? Hello, everybody. I'm reading the text. And there is one thing I can't undersatnd. What does "IE words, CG words, OE proper" mean? Could you help me, please? The text: The formation of the National English Language. The evolution of English in the 15 hundred years of its existence has been an unbroken one, but within it it’s possible to single out 3 main periods: 1.Old English (OE) 2.Middle English (ME) 3.New English (NE) Old English The historical background. It began in the 5th century, when the German tribes (Angles, Saxons, Jutes and Frisians) settled in the British Isles. Originally the social and economical system was tribal and slave owning, which gradually developed into a feudal one. Accordingly tribal dialects developed into local ones. Geographically it covers the territory of the so-called English Proper. The main historical events are: -the introduction of Christianity; -the Scandinavian invasion. Word-stock (WS) Originally OE was a purely G language. So the WS comprised 3 layers of native words: 1st – IE words (mother, father) 2nd – CG words (to rise, to sink) 3d - OE proper (hlaford - lord)