The Cartesian product \(B \times B\) contains \(9\) elements including \((- 3, 9)\) and \((9, 1)\) are found. Find
1. The set \(B\):
[Note: Enter the numbers in the order of the coordinates in pairs.]
2. The remaining elements of \(B \times B\): \(\huge\{\)\(\huge\}\)
[Note: Separate each ordered pair with a comma.]