Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Series Sorted | Title | Doctor | Featuring | Released |
| --- | --- | --- | --- | --- |
| 6Y/AA | The Nightmare Fair | 6th | Peri , Celestial Toymaker | November 2009 |
| 6Y/AB | Mission to Magnus | 6th | Peri, s Ice Warrior , Sil | December 2009 |
| 6Y/AC | Leviathan | 6th | Peri | January 2010 |
| 6Y/AD | The Hollows of Time | 6th | Peri, Tractators | February 2010 |
| 6Y/AE | Paradise 5 | 6th | Peri | March 2010 |
| 6Y/AF | Point of Entry | 6th | Peri | April 2010 |
| 6Y/AG | The Song of Megaptera | 6th | Peri | May 2010 |
| 6Y/AH | The Macros | 6th | Peri | June 2010 |
Question:
What is the series sorted value for the episode released December 2009?
Answer:
6Y/AB