> The grammar is simply different.

Ok, thanks for clarifying this. And now the main subject of this thread..

Suppose I want to write "weapon which injures and which causes pain"; I will write {rIQchoHmoHbogh nuH 'ej 'oy'choHmoHbogh}.

But now suppose I want to write "weapon which injures so which it causes pain". (Ok, yes, the English sounds weird).

Can I write {rIQchoHmoHbogh nuH vaj 'oy'choHmoHbogh}? Or do I *have* to place an {'ej} before the {vaj}, thus writing {rIQchoHmoHbogh nuH 'ej vaj 'oy'choHmoHbogh}?

If {vaj} was classified as a conjunction, I'd feel no problem with omitting the {'ej}. But seeing it being classified as an adverb, I get the impression that in such cases (of {-bogh} phrases being joined), it *has* to be preceded by a conjunction.