Lock

1 . 1 is a front view of the lock, showing my new design;

1 . 2 is a back view thereof;

1 . 3 is a left view thereof;

1 . 4 is a top view thereof;

1 . 5 is a front, top, left side perspective view thereof;

1 . 6 is a left side perspective view of another state of the lock thereof, with the lock part rotated;

1 . 7 is a top side perspective view of another state of the lock thereof, with the lock part rotated; and

1 . 8 is a bottom view thereof.

The broken lines shown in the drawings depict portions of the lock that form no part of the claimed design.