This feels like an appropriate place to comment that passwords of that length are essentially uncrackable by modern standards and that you have no need for the pesky and easily forgettable special characters or numbers! Relevant xkcd.
Quick note on the comic - dictionary attacks are possible now, so four plaintext words is not enough without special characters, but 10, like your example, is more than enough :)
This feels like an appropriate place to comment that passwords of that length are essentially uncrackable by modern standards and that you have no need for the pesky and easily forgettable special characters or numbers! Relevant xkcd.
Quick note on the comic - dictionary attacks are possible now, so four plaintext words is not enough without special characters, but 10, like your example, is more than enough :)