| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [prep] the | 59 |
|
| 2 | must in the | 28 |
|
| 3 | must in the | 28 |
|
| 4 | must at the | 10 |
|
| 5 | must at the | 10 |
|
| 6 | must for the | 7 |
|
| 7 | must for the | 7 |
|
