Seven people in red, orange, yellow, green, blue, cyan, and purple stand in a row  The teacher asks the seven people to report the number one by one
The students with multiples should stand behind the two students behind them in turn from front to back; finally, the students with multiples of 4 should stand at the top of the team, and purple student should stand in the middle of the team to form a new team
There are two people between yellow and green