A square decorative tile has a pattern of a diagonal line running from the bottom-left corner to the top-right corner. A 2x2 grid is filled with four of these tiles. Tile 1 (top-left) is rotated 90 degrees clockwise. Tile 2 (top-right) is kept normal. Tile 3 (bottom-left) is kept normal. Tile 4 (bottom-right) is rotated 90 degrees clockwise. What do the diagonal lines of the four tiles look like in the grid?