Second, it reflects a concrete technique by which regular sound Greek z u g o n th u g a (ter-) -n u -(os) e r u th (rós) Regular sound correspondences across four Indo-European languages, illustrated with help of alignments along the lines of Anttila (1972, page 246).
to the original illustration, lost sounds are displayed with help of the dash "-" as a gap symbol, while missing words (where no reflex in Gothic or Latin could be found) are represented by the "∅" symbol.