| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they should be [prep] | 48 |
|
| 2 | they should be in | 17 |
|
| 3 | they should be at | 7 |
|
| 4 | they should be on | 6 |
|
| 5 | they should be of | 5 |
|
