private static int[][] rotateRight(int[][] squares) {
		int[][] rotate90right = new int[4][4];
		for (int row = 0; row < 4; row++) {
		    for (int col = 0; col < 4; col++) {
		         rotate90right[row][col] = squares[4 - col - 1][row];
		    }
		}
		return rotate90right;
	}