Place one more of these shapes inside the square.

Keep the original text's line breaks and format, and output the translation result directly. 

Note: The second sentence is a directive for the translation task and should not be included in the translation output. Here is the translation:

Place one more of these shapes inside the square.
Solution: For each $2 \times 2$ square, at least two cells should be covered. An $8 \times 8$ square can be divided into 16 non-overlapping $2 \times 2$ squares. Therefore, at least 11 figures should be covered. With 11 figures, it is feasible.