Toy Building Block

FIG. 1 is a front, top and right side perspective view of a toy building block, showing my new design;

FIG. 2 is a rear, bottom and left side perspective view thereof;

FIG. 3 is an exemplary perspective view of two blocks shown combined in use;

FIG. 4 is another exemplary perspective view of two blocks in shown combined in use;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a right side view thereof;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines represent the environment in which the toy building block resides and forms no part of the claimed design.