I just had to make a password for a hotel.

8 to 20 characters Uppercase Lowercase Digits OR special characters.

The capitalized OR is important. You can have either numbers in the password, or special characters, BUT NOT BOTH.

Took me 8 tries.

• First one was too long.
• Second and third used both numbers and characters, but I thought the characters were TOO special.
• 4 through 6 used both numbers and special characters.
• Seventh password used just letters and numbers, and it was accepted.
• Eighth try I used just letters and keyboard characters, and that was accepted too.