 It included not just the crumbling case system, but also a strict separation between masculine and feminine genders, falling out of use in some dialects as well.Many grammarians of the time attempted to make Dutch more like Latin and Greek, and even included cases such as the ablative and locative which had not existed in any ancestor of Dutch since Proto-Indo-European times.By the 18th century, the everyday spoken language had lost its case system in most dialects, but it remained present in the written standard.