Demo Wi-Fi Hacking.
I'll show you what tools to use, what kind of password lists exist and how many characters will or will not keep you save from attacking.
Please forgive my stuttering as English is not my native language. I did the best I could (several times).
Check if password is listed in dictionary file:
Common Passwords list: https://www.isee2it.nl/dl/pwd/Passwords.zip
Get-ChildItem -Path D:\SecLists-master -recurse | Select-String -Pattern "Shelovesu2"
cat /usr/share/wordlists/rockyou.txt | grep "rotterdam"