FIG. 1 is a perspective view illustrating a first embodiment of the design of the present invention;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of a second embodiment of the lock of the design;
FIG. 9 is a front elevational view thereof;
FIG. 10 is rear elevational view thereof;
FIG. 11 is a left side view thereof;
FIG. 12 is a right side view thereof;
FIG. 13 is a top plan view thereof;
FIG. 14 is a bottom plan view thereof;
FIG. 15 is a perspective view illustrating a third embodiment of the design of the invention;
FIG. 16 is a front elevational view thereof;
FIG. 17 is a rear elevational view thereof;
FIG. 18 is a left side view thereof;
FIG. 19 is a right side view thereof;
FIG. 20 is a top plan view thereof; and,
FIG. 21 is a bottom plan view thereof.
The broken lines show components of the combination lock that form no part of the claimed design.