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This test contains four cases. The cases must produce the following results for the test to pass.

• Case 1: On a mouseover event on the top square, all four squares must turn blue.
• Case 2: On a mouseover event on the top middle square, all four squares must turn blue and a black stroke must appear on the referencing square (element).
• Case 3: On a mouseover event on the bottom middle square, all four squares must turn blue and a black stroke must appear on the referencing square (element).
• Case 4: On a mouseover event on the bottom square, all four squares must turn blue, and on a mousedown event a black stroke must appear on the referencing square (element).