This is just a simple research to see how varied most people's passwords are, since many people will not use much variety in their passwords. The top 15 most commonly used password characters are (in order):
a (25)
x (23)
o (20)
s (20)
e (19)
1 (18)
t (16)
u (14)
y (14)
f (14)
3 (13)
m (12)
l (12)
c (11)
b (10)

All

Please add the top 10 characters you use in any of your passwords, or just simply make up a password right here. I don't save any data besides the 10 characters and a session to prevent users from spamming the list with one letter (Yes, such horrible people are out there :x), but nevertheless, don't enter a password you actually use.