Note: These files have both the questions and answers included. |
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| July / October 1999: | Standard | Difficult |
| May / June 1999: | Standard | Difficult |
| March / April 1999: | Standard | Difficult |
| February 1999: | Standard | Difficult |
| December 1998: | Standard | Difficult |
| October / November 1998: | Standard | Difficult |
| September 1998: | Standard | Difficult |
| August 1998: | Standard | Difficult |
| July 1998: | Standard | Difficult |
| June 1998: | Standard | Difficult |
| May 1998: | Standard | Difficult |
| April 1998: | Standard | Difficult |
| March 1998: | Standard | Difficult |
| February 1998: | Standard | Difficult |
| January 1998: | Standard | Difficult |
| December 1997: | Standard | Difficult |
| November 1997: | Standard | Difficult |
| October 1997: | Standard | Difficult |
| September 1997: | Standard | Difficult |
| August 1997: | Standard | Difficult |
| July 1997: | Standard | Difficult |
| June 1997: | Standard | Difficult |
| May 1997: | Standard | Difficult |
| April 1997: | Standard | Difficult |
| March 1997: | Standard | Difficult |
| February 1997: | Standard | Difficult |
| January 1997: | Standard | Difficult |
| December 1996: | Standard | Difficult |
| November 1996: | Standard | Difficult |
| October 1996: | Standard | Difficult |
| September 1996: | Standard | Difficult |
| August 1996: | Standard | Difficult |
| July 1996: | Standard | Difficult |
| June 1996: | Standard | Difficult |
| May 1996: | Standard | Difficult |
| April 1996: | Standard | Difficult |
| March 1996: | Standard | Difficult |
| February 1996 | Combined | |
| January 1996 | Combined | |
| December 1995 | Combined | |
| November 1995 | Combined | |
| September / October 1995 | Combined | |
| August 1995 | Combined | |
| July 1995 | Combined | |
| June 1995 | Combined | |
