Save regex permalink not work

[agusmakmun]

This simply pattern is worked well.

But I don't know why this patterns can't be save, what is too long?

1. mode: findall

2. patterns

(https?://)?(www\.)?(youtube|youtu|youtube-nocookie)\.(com|be)/(watch\?v=|embed/|v/|.+\?v=)?([^&=%\?]{11})

3. strings

https://youtu.be/yVpbFMhOAwE

https://www.youtube.com/watch?v=8Z5EjAmZS1o

https://www.youtube.com/embed/yVpbFMhOAwE

<iframe width="560" height="315" src="https://www.youtube.com/embed/Tlf00NT6mig" frameborder="0" allowfullscreen></iframe>

<iframe width="560" height="315" src="https://www.youtube.com/embed/KQzCxdO3hvo" frameborder="0" allowfullscreen></iframe>

https://www.youtube.com/watch?v=VslLZcV9ZcU&list=RD8Z5EjAmZS1o&index=2