a deranked predicate form in an asyndetic - deranked - adverbial clause construction that lacks subject - person indexation. Example: in Sitting in front of his desk, he noticed a bright light out the window, sitting is a converb. Haspelmath (1995:5) excludes from the converb category forms that are deranked with subject person indexation that is different from that found with declarative - main clause - predication.