During that time, the Kajkavian literary language was the dominant written form in its spoken area along with Latin and German. Until Ljudevit Gaj's attempts to modernize the spelling, Kajkavian was written using Hungarian spelling conventions. Kajkavian began to lose its status during the Croatian National Revival in mid-19th Century when the leaders of the Illyrian movement opted to use the Shtokavian dialect as the basis for the future South Slavic standard language, the reason being that it had the highest number of speakers. Initially, the choice of Shtokavian was accepted even among Slovene intellectuals, but later it fell out of favor. The Zagreb linguistic school was opposed to the course that the standardization process took. Namely, it had almost completely ignored Kajkavian (and Chakavian) dialects which was contrary to the original vision of Zagreb school. With the notable exception of vocabulary influence of Kajkavian on the standard Croatian register (but not the Serbian one), there was very little to no input from other non-Shtokavian dialects. Instead, the opposite was done, with some modern-day linguists calling the process of 19th-century standardization an event of "neo-Shtokavian purism" and a "purge of non-Shtokavian elements".