| 1 | The shops in the mall are arranged next to each other. | |
| 2 | These books are arranged in alphabetical order. | |
| 3 | The students' workbooks in the class are neatly arranged in order. | |
| 4 | The people in this corridor did not line up in the designated order, which caused chaos. | |
| 5 | The math teacher wrote down several permutations on the blackboard and asked us to calculate their total number. |