How to spell lanterns with eighteen magic rulers

How to spell lanterns with eighteen magic rulers;

1. Fix the first paragraph and turn the second paragraph counterclockwise once, and a (blue) rectangle and triangle will appear.

2. The third segment rotates counterclockwise once, and a triangle appears; the fourth segment rotates clockwise once, and the fifth, sixth and seventh segments rotate repeatedly. At this time, a corner of the lantern has been exposed.

3. Repeat the same rotation, the eighth section rotates counterclockwise and the ninth section rotates clockwise.

4. Continue to rotate counterclockwise and clockwise repeatedly. During the operation, it is necessary to check whether all white triangles are connected with blue rectangles at any time.

5. The last two paragraphs also repeat clockwise rotation and counterclockwise rotation.