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 # | Episode # | Title | Directed by | Written by | U.S. viewers (million) | Original airdate | Production Code |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 77.0 | 1.0 | "The Avengers" | Ian Toynton | Josh Schwartz | 3.39 | November2,2006 | 3T5251 |
| 78.0 | 2.0 | "The Gringos" | Patrick Norris | John Stephens | 3.54 | November7,2006 | 3T5252 |
| 79.0 | 3.0 | "The Cold Turkey" | Michael Lange | J. J. Philbin | 3.73 | November9,2006 | 3T5253 |
| 80.0 | 4.0 | "The Metamorphosis" | Norman Buckley | Leila Gerstein | 3.77 | November16,2006 | 3T5254 |
| 81.0 | 5.0 | "The Sleeping Beauty" | Ian Toynton | John Stephens | 3.67 | November30,2006 | 3T5255 |
| 82.0 | 6.0 | "The Summer Bummer" | Michael Lange | Josh Schwartz & Stephanie Savage | 3.82 | December7,2006 | 3T5256 |
| 83.0 | 7.0 | "The Chrismukk-huh?" | Ian Toynton | J. J. Philbin & John Stephens | 4.3 | December14,2006 | 3T5257 |
| 84.0 | 8.0 | "The Earth Girls Are Easy" | Norman Buckley | Mark Fish | 4.15 | December21,2006 | 3T5258 |
| 85.0 | 9.0 | "The My Two Dads" | Michael Schultz | Josh Schwartz & Stephanie Savage | 3.93 | January4,2007 | 3T5259 |
| 86.0 | 10.0 | "The French Connection" | John Stephens | J. J. Philbin | 3.83 | January11,2007 | 3T5260 |
| 87.0 | 11.0 | "The Dream Lover" | Patrick Norris | Leila Gerstein | 3.96 | January18,2007 | 3T5261 |
| 88.0 | 12.0 | "The Groundhog Day" | Ian Toynton | Mark Fish | 3.57 | January25,2007 | 3T5262 |
| 89.0 | 13.0 | "The Case of the Franks" | Norman Buckley | J. J. Philbin | 3.82 | February1,2007 | 3T5263 |
| 90.0 | 14.0 | "The Shake Up" | Ian Toynton | John Stephens | 3.58 | February8,2007 | 3T5264 |
| 91.0 | 15.0 | "The Night Moves" | Patrick Norris | Stephanie Savage | 3.65 | February15,2007 | 3T5265 |
Question:
Who wrote episode 11?
Answer:
Leila Gerstein