Most of my passwords, the secure ones always, are a series of motions on the keyboard. I do not think of them as letters, numbers and punctuation characters. These are super-secure once you get the hang of creating them effectively. However, I cannot even tell you what these passwords are, unless I have a keyboard in front of me to type them on and look at the result. It's like playing the piano. You don't think of individual notes when performing, you think of the phrasing, expression, and where you are going with it (not the individual notes to get there). Sounds weird, I know, but then I'm just a geeky engineer (and a pianist!)