<Li> Seventh Schedule (Article 246)--The union (central government), state, and concurrent lists of responsibilities . </Li> <Li> Eighth Schedule (Articles 344 (1) and 351)--The official languages . </Li> <Li> Ninth Schedule (Article 31 - B)--Validation of certain Acts and Regulations . </Li> <Li> Tenth Schedule (Articles 102 (2) and 191 (2))--"Anti-defection" provisions for Members of Parliament and Members of the State Legislatures . </Li>

Who was the architect of the sixth schedule of the constitution of india