Changes made by Commission Implementing Regulation (EU) No 356/2012 of 24 April 2012 amending Implementing Regulation (EU) No 1239/2011 as regards the periods during which tenders may be submitted in response to the second and subsequent partial invitations to tender for the 2011/2012 marketing year for imports of sugar at a reduced customs duty: Commission Implementing Regulation (EU) No 1239/2011 of 30 November 2011 opening a standing invitation to tender for the 2011/2012 marketing year for imports of sugar of CN code 1701 at a reduced customs duty