I get how all of these are common easily remembered passwords that people would use, except for this one: 1qaz2wsx Where did that come from as a "most common"

I get how all of these are common easily remembered passwords that people would use, except for this one: 1qaz2wsx Where did that come from as a "most common" password? Hah! Nevermind. I just looked at it on the keyboard. Posting anyway for fun. I used to think "come up with a pattern on the keyboard" was a good plan, but apparently it is fairly common. Glad I use a password manager now (passpack).