2x 2 4x 12 0 July 8, 2019 16 32 64 128 X 3 2x 2 4x 12 0 2x 3 6x 2 4x 12 0 3x 4 2x 3 4x 2 4x 12 0 X 2 7x 12 2x 2 4x 5 0 2x 3 5x 2 4x 12 0 X 4 2x 3 5x 2 4x 12 0 1 9x 0 2x 2 4x =- 1 12 3 4x 2 1 2x 1 12 0