The pegative case system has some implications for the syntax and morphosyntax in situations that are not just ditransitive finite verb clauses.
Pegatives can be transitive or intransitive subjects in coordinated structures; nominatives cannot be pegative subjects in coordinated structures. This is one of the most prominent uses of the anti-passive. (However, first person and second person nominatives can overcome such gaps without the anti-passive in at least one of the dialects.)
Thus we get situations like the following:
"A father surely teaches (his) son, and thus ensures him (of an) inheritance".
If the verb had been sirvac-ju instead, it would have been the son who had ensured [something], and since sirvac- is mandatorily at least transitive, the verb phrase would have been malformed.
Further, relativization shows a restriction: the pegative argument is not relativizable. Thus
*miv kŕderiman pangĺk-an-di-st gukla - village tax-exemption grant-past.active_participle-masc.REL king,Given that Sargaĺk primarily uses participle-like constructions for relativization, this might as well be described as a property of the participles. Sargaĺk does not really permit relativization of anything 'lower' on the relativization hierarchy, although it's hierarchy is slightly twisted, with the top tiers being intransitive subject > recipient > direct object.
miv kŕderimazvi pangeĺk-ne-st gukla - village tax-exemption-with grant-past.antipassive_participle-masc.REL king
'the king who granted the village tax exemption'
Details regarding how the alignment interacts with control will be given later.