UNKNOWN focusable has_input_focus
++UNKNOWN hidden
++++UNKNOWN hidden
++++++TABLE number_of_rows=2 number_of_columns=2
++++++++ROW_GROUP hidden
++++++++++TABLE_ROW
++++++++++++COLUMN_HEADER label='Single' cell_row_span=1 cell_column_span=1
++++++++++++++STATIC_TEXT label='Single'
++++++++++++++++UNKNOWN label='Single'
++++++++++++COLUMN_HEADER label='Pair' cell_column_index=1 cell_row_span=1 cell_column_span=1
++++++++++++++STATIC_TEXT label='Pair'
++++++++++++++++UNKNOWN label='Pair'
++++++++++TABLE_ROW row_index=1
++++++++++++CELL label='A' cell_row_index=1 cell_row_span=1 cell_column_span=1
++++++++++++++STATIC_TEXT label='A'
++++++++++++++++UNKNOWN label='A'
++++++++++++CELL label='AA' cell_row_index=1 cell_column_index=1 cell_row_span=1 cell_column_span=1
++++++++++++++STATIC_TEXT label='AA'
++++++++++++++++UNKNOWN label='AA'