In Austrian German, (because "common" is relative to something e.g. geographical area, group of people) - "einhin" and - "einher" are used, but usually pronounced - "eini" and (e.g. Er springt eini.) - "eina" (e.g. Er springt eina.) respectively, (unless you're in the Tyrolerean Uplands where the "h" is emphasized as a fricative: "eihi" and "eiha", respectively.) This might seem very foreign someone unfamiliar with this, but it is not. Consider the ubiquitous “vorhin” and “vorher”. Whether prefixed or suffixed, it is merely a convention. Some dialects use one of the forms to express **both directions**, therefore not referencing the speakers location. However, in German, even in most dialects, the direction relative to the person is important.