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:
| Outcome | Date | Surface | Partner | Opponent in the final | Score in the final |
| --- | --- | --- | --- | --- | --- |
| Runner-up | 16 July 2006 | Clay | Oliver Marach | Jonas Björkman Thomas Johansson | 3–6, 6–4, [4–10] |
| Runner-up | 23 July 2006 | Clay | Lucas Arnold Ker | Alberto Martín Fernando Vicente | 4–6, 3–6 |
| Runner-up | 29 July 2007 | Clay | Tomas Behrend | Potito Starace Luis Horna | 6–7 (4–7) , 6–7 (5–7) |
| Runner-up | 14 October 2007 | Hard (i) | Tomas Behrend | Mariusz Fyrstenberg Marcin Matkowski | 4–6, 2–6 |
| Runner-up | 2 March 2008 | Hard (i) | Rogier Wassen | Paul Hanley Jordan Kerr | 3–6, 6–3, [8–10] |
| Winner | 13 July 2008 | Clay | Philipp Kohlschreiber | Michael Berrer Mischa Zverev | 6–3, 6–4 |
| Runner-up | 26 October 2008 | Hard (i) | Philipp Kohlschreiber | Mahesh Bhupathi Mark Knowles | 3–6, 3–6 |
| Runner-up | 8 February 2009 | Hard (i) | Rogier Wassen | Martin Damm Robert Lindstedt | 4–6, 3–6 |
| Winner | 14 June 2009 | Grass | Philipp Kohlschreiber | Andreas Beck Marco Chiudinelli | 6–3, 6–4 |
| Runner-up | 18 July 2010 | Clay | Philipp Petzschner | Carlos Berlocq Eduardo Schwank | 6–7 (5–7) , 6–7 (6–8) |
| Winner | 3 October 2010 | Hard | Viktor Troicki | Jonathan Erlich Jürgen Melzer | 6–4, 6–4 |
| Runner-up | 27 February 2011 | Hard | Alexander Peya | Scott Lipsky Rajeev Ram | 6–4, 4–6, [3–10] |
| Runner-up | 1 May 2011 | Clay | Andreas Beck | Simone Bolelli Horacio Zeballos | 6–7 (3–7) , 4–6 |
| Runner-up | 31 July 2011 | Clay | Alexander Peya | František Čermák Filip Polášek | 3–6, 6–7 (7–9) |
| Runner-up | 27 August 2011 | Hard | Alexander Peya | Jonathan Erlich Andy Ram | 6–7 (2–7) , 4–6 |
| Runner-up | 6 January 2012 | Hard | Philipp Kohlschreiber | Filip Polášek Lukáš Rosol | 3–6, 4–6 |
| Winner | 4 January 2013 | Hard | Philipp Kohlschreiber | Julian Knowle Filip Polášek | 7–5, 6–4 |
| Runner-up | 14 April 2013 | Clay | Dustin Brown | Julian Knowle Filip Polášek | 3–6, 2–6 |
| Winner | 3 August 2013 | Clay | Martin Emmrich | František Čermák Lukáš Dlouhý | 6–4, 6–3 |
Question:
Which Surface has a Partner of oliver marach?
Answer:
Clay