The design consists of the visual features of the entirety of the TOY BLOCK (SINGLE ROW) shown in the drawings. The seventh variant shows break lines which represent variable length. The block elements repeat at regular intervals throughout the length of the article.Figure 1a is a front view of a first variant of the TOY BLOCK (SINGLE ROW);Figure 1b is a bottom view of the first variant of the TOY BLOCK (SINGLE ROW);Figure 1c is a cross-sectional view of the first variant of the TOY BLOCK (SINGLE ROW) taken along line A-A of Figure 1a;Figure 1d is a plan view of the first variant of the TOY BLOCK (SINGLE ROW);Figure 1e is a right view of the first variant of the TOY BLOCK (SINGLE ROW);Figure 1f is a rear view of the first variant of the TOY BLOCK (SINGLE ROW);Figure 1g is a left view of the first variant of the TOY BLOCK (SINGLE ROW);Figure 2a is a front view of a second variant of the TOY BLOCK (SINGLE ROW);Figure 2b is a bottom view of the second variant of the TOY BLOCK (SINGLE ROW);Figure 2c is a top view of the second variant of the TOY BLOCK (SINGLE ROW);Figure 2d is a right view of the second variant of the TOY BLOCK (SINGLE ROW);Figure 2e is a rear view of the second variant of the TOY BLOCK (SINGLE ROW);Figure 2f is a left view of the second variant of the TOY BLOCK (SINGLE ROW);Figure 3a is a front view of a third variant of the TOY BLOCK (SINGLE ROW);Figure 3b is a bottom view of the third variant of the TOY BLOCK (SINGLE ROW);Figure 3c is a top view of the third variant of the TOY BLOCK (SINGLE ROW);Figure 3d is a right view of the third variant of the TOY BLOCK (SINGLE ROW);Figure 3e is a rear view of the third variant of the TOY BLOCK (SINGLE ROW);Figure 3f is a left view of the third variant of the TOY BLOCK (SINGLE ROW);Figure 4a is a front view of a fourth variant of the TOY BLOCK (SINGLE ROW);Figure 4b is a bottom view of the fourth variant of the TOY BLOCK (SINGLE ROW);Figure 4c is a top view of the fourth variant of the TOY BLOCK (SINGLE ROW);Figure 4d is a right view of the fourth variant of the TOY BLOCK (SINGLE ROW);Figure 4e is a rear view of the fourth variant of the TOY BLOCK (SINGLE ROW);Figure 4f is a left view of the fourth variant of the TOY BLOCK (SINGLE ROW);Figure 5a is a front view of a fifth variant of the TOY BLOCK (SINGLE ROW);Figure 5b is a bottom view of the fifth variant of the TOY BLOCK (SINGLE ROW);Figure 5c is a top view of the fifth variant of the TOY BLOCK (SINGLE ROW);Figure 5d is a right view of the fifth variant of the TOY BLOCK (SINGLE ROW);Figure 5e is a rear view of the fifth variant of the TOY BLOCK (SINGLE ROW);Figure 5f is a left view of the fifth variant of the TOY BLOCK (SINGLE ROW);Figure 6a is a front view of a sixth variant of the TOY BLOCK (SINGLE ROW);Figure 6b is a bottom view of the sixth variant of the TOY BLOCK (SINGLE ROW);Figure 6c is a top view of the sixth variant of the TOY BLOCK (SINGLE ROW);Figure 6d is a right view of the sixth variant of the TOY BLOCK (SINGLE ROW);Figure 6e is a rear view of the sixth variant of the TOY BLOCK (SINGLE ROW);Figure 6f is a left view of the sixth variant of the TOY BLOCK (SINGLE ROW);Figure 7a is a front view of a seventh variant of the TOY BLOCK (SINGLE ROW);Figure 7b is a bottom view of the seventh variant of the TOY BLOCK (SINGLE ROW);Figure 7c is a top view of the seventh variant of the TOY BLOCK (SINGLE ROW);Figure 7d is a right view of the seventh variant of the TOY BLOCK (SINGLE ROW);Figure 7e is a rear view of the seventh variant of the TOY BLOCK (SINGLE ROW); andFigure 7f is a left view of the seventh variant of the TOY BLOCK (SINGLE ROW).