With regard to Tamil Siddhas which of the following is not correct?
1. Tirumular was the greatest of the Tamil Siddhas
2. Tamil Siddhism shows features of anti-Brahmanism and anti-ritualism
3. Tamil Siddhas laid emphasis on the importance of Siva and Murukan, the Tamil deity
4. The chief centres of Tamil Siddhas were Tondinadu and Pandinadu