Qwertyuiopasdfghjklzxcvbnm Mnbvcxzlkjhgfdsapoiuytrewq -

The QWERTY layout is the most common keyboard layout used today. It was designed in the 1870s for mechanical typewriters to slow down the typist's fingers to prevent keys from jamming together as the typist pressed them in rapid succession. Despite the fact that modern keyboards do not have this issue, the QWERTY layout has remained the standard.

Breaking down the provided string:

Thus, the string is a of the QWERTY keyboard itself. qwertyuiopasdfghjklzxcvbnm mnbvcxzlkjhgfdsapoiuytrewq