Lock

FIG. 1 is a front, bottom, and left perspective view of a lock showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear, top, and right perspective view thereof;

FIG. 9 is a perspective view of its use state; and,

FIG. 10 is a perspective view of its use state.

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