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:
| Date | Competition | Home team | Score | Away team | Score |
| --- | --- | --- | --- | --- | --- |
| 16 October 2004 | Powergen Cup | Bedford |  | Tabard |  |
| 15 February 2005 | National Division One | Bedford | 26 | Otley | 13 |
| 19 February 2005 | National Division One | Bedford | 16 | London Welsh | 17 |
| 26 February 2005 | National Division One | Sedgley Park | 12 | Bedford | 23 |
| 12 March 2005 | National Division One | Bedford | 23 | Cornish Pirates | 28 |
| 2 April 2005 | National Division One | Bedford | 39 | Plymouth Albion | 21 |
| 9 April 2005 | National Division One | Birmingham Solihull | 18 | Bedford | 29 |
Question:
bedford scored ______ more points than plymouth albion on the 2 april 2005 game.
Answer:
18