According to the observation, this pile of building blocks is divided into two parts. In the front part, 32 small cubes can be seen, and in the back part, 32 small cubes with the same shape are added, which is the total number of building blocks.

In order to make the shape seen from the left, there are three vertical cubes in the back row and two vertical cubes in the front row. According to this, two small cubes on the left side of the front and rear rows can be removed respectively. In order to make a shape from the front, you can move the top block on the left side of the back to the right side of the back row, and then move the small cube on the left side of the front row to the front right side.