How to redirect a specific list of webpages to a subdirectory

I am moving some blog articles from the root directory to a subdirectory named blog/. How do I configure Nginx to permanently redirect a specific list of web pages to that subdirectory?

Of course, I could manually do something like the configuration shown below, but I have more than 50 webpages at the root that I want to redirect to the blog/ subdirectory. Is there a simpler way?

location = /first-article/ {
    return 301 /blog/first-article/;
}

location = /second-article/ {
    return 301 /blog/second-article/;
}

location = /third-article/ {
    return 301 /blog/third-article/;
}

# etc.