Table:
tournament	2002	2004	2005	2006	2007	2008	2010	2011	2012

grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments	grand slam tournaments

australian open	a	q2	q2	a	q1	q2	q2	a	a

french open	a	a	q2	q2	q2	q2	q1	a	a

wimbledon	1r	1r	1r	1r	1r	1r	q2	q1	a

us open	a	1r	q1	q1	q1	q1	q1	a	a

win - loss	0 - 1	0 - 2	0 - 1	0 - 1	0 - 1	0 - 1	0 - 0	0 - 0	0 / 9

Based on this table picture, can you identify any merged cells and give their coordinates in the JSON format {'top-left':(x, y), 'bottom-right':(m, n)}, where (x, y) and (m, n) correspond to the top-left and bottom-right (row_id, column_id) of the merged area? The row_id and column_id should start from 1 rather than 0.

This table does not contain any merged cells.