42 people dance the triangle dance, how to arrange it, the most dazzling national style square dance.

42 people danced square dance in a triangle. The number of people on each side is the same or different 1, and the number of people in each row is the same or different 1. How to arrange them? The following is an arrangement method:

1. Divide into 14 groups with 3 people in each group.

2. Hold hands in a circle in each group and stand well.

3. 1 group rotates counterclockwise.

4. The second group didn't turn around, but moved one position to the left.

5. The third group didn't turn around, but moved two positions to the left.

6. The fourth group didn't turn around, but moved three positions to the left.

7. The fifth group didn't turn around, but moved four positions to the left.

8. The sixth group didn't turn around, but moved five positions to the left.

9. The seventh group didn't turn around, but moved six positions to the left.

10. People in the eighth group don't turn around, but only move seven positions to the left.

1 1. The people in the ninth group didn't turn around, but moved eight places to the left.

12. 10 group didn't turn around, but moved to the left by 9 positions.

13. 1 1 People in the group don't turn around, but only move ten places to the left.

14. 12 group didn't turn around, but moved eleven positions to the left.

People in group 15. 13 don't turn around, but only move to the left by 12 positions.

16. 14 people in the group did not turn around, but moved thirteen places to the left.

After this arrangement, the number of people in each row is equal or different 1, and the number of people on each side is equal or different 1.