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:
| DVD Title | Discs | Year | No. of Ep. | DVD release\nRegion 2 | DVD release\nRegion 4 |
| --- | --- | --- | --- | --- | --- |
| Complete Series 1 | 2 | 1971 | 8 | 30 April 2007 | 4 July 2007 |
| Complete Series 2 | 2 | 1972 | 8 | 2 July 2007 | 8 May 2008 |
| Complete Series 3 | 2 | 1973–1974 | 8 | 17 March 2008 | 5 March 2009 |
| Complete Series 4 | 2 | 1975 | 8 | 19 May 2008 | 6 August 2009 |
| Complete Series 5 | 2 | 1976 | 8 | 15 June 2009 | 4 March 2010 |
| Complete Series 6 | 2 | 1977–1978 | 8 | 22 February 2010 | 5 August 2010 |
| Complete Series 7 | 2 | 1978–1979 | 8 | 17 May 2010 | 3 March 2011 |
| Complete Series 8 | 2 | 1980 | 8 | 6 September 2010 | 2 June 2011 |
| Complete Series 9 | 2 | 1981–1982 | 8 | 28 February 2011. | 1 March 2012 |
| Complete Series 10 | 2 | 1983–1984 | 6 | 9 May 2011. | 5 September 2012 |
| Complete Series 11 | 2 | 1985 | 5 | 25 July 2011. | 3 April 2013 |
| Complete Series 12 | 2 | 1985–1986 | 6 | 26 September 2011. | 7 August 2013 |
| The Christmas Specials | 2 | 1973–1982-1984-1987 | 4 | 29 October 2007. | 6 November 2008 |
| The Complete Collection | 27 | 1971–1987, 2010 | 96 | 24 September 2012. | 2013 |
| Two Ronnies In Australia | 2 | 1986 | 6 | — | 28 June 2008 |
| The Best of...Volume 1 | 1 | 1971–1984 | 1 Compilation | 1 October 2001 | 4 March 2002 |
| The Best of...Volume 2 | 1 | 1971–1985 | 1 Compilation | 29 September 2003 | 17 March 2003 |
Question:
what is previous to complete series 10?
Answer:
Complete Series 9