| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [prep] [art] | 11 |
|
| 2 | must have [prep] [art] | 11 |
|
| 3 | must have [prep] [art] | 11 |
|
| 4 | must have [prep] the | 6 |
|
| 5 | must have [prep] the | 6 |
|
