def plot_sample_images(image_data, labels, categories):
    plt.figure(figsize=(12, 8))
    for i in range(6):
        plt.subplot(2, 3, i + 1)
        plt.imshow(image_data[i].astype('uint8'))
        plt.title(categories[labels[i]])
        plt.axis('off')
    plt.tight_layout()
    plt.show()

plot_sample_images(image_data, labels, categories)