Toy Building Block

FIG. 1 is a first perspective view of a toy building block showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a first perspective view of another state of the toy building block showing my new design;

FIG. 10 is a second perspective view of another state thereof;

FIG. 11 is a front view of another state thereof;

FIG. 12 is a back view of another state thereof;

FIG. 13 is a left side view of another state thereof;

FIG. 14 is a right side view of another state thereof;

FIG. 15 is a top view of another state thereof; and,

FIG. 16 is a bottom view of another state thereof.

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