Udmurt has a number of distinct converbs, i.e. non-finite verb forms heading syntactically subordinate clauses. The converb in -sa is a same-subject (SS) converbs, which generally requires coreference between its subject and the subject of the superordinate clause. It is also licensed by two subjects which are in a part-whole relation with each other but which do not strictly corefer. Udmurt does not require the obligatory coding of possession on the possessed noun in such constructions.
See also Altai, Arrernte (Mparntwe), Bashkir, Forest Enets, Karaim, Khalkha Mongolian, Khanty (Eastern), Khanty (Northern), Kirghiz, Old Turkic, Shor, Tundra Enets, Tundra Nenets, Turkish, Tuvan (Altai), Tuvan (Jungar), Tuvan (Todža), Uyghur, Uzbek, Yukaghir (Kolyma), Yukaghir (Tundra).
András Bárány (fieldnotes).