| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [prep] [art] | 2090 |
|
| 2 | [modal v] be take [prep] [art] | 410 |
|
| 3 | [vb mod] be take [prep] [art] | 410 |
|
| 4 | must [be] take [prep] [art] | 36 |
|
| 5 | must be take [prep] [art] | 36 |
|
| 6 | must be take [prep] [art] | 36 |
|
| 7 | must [be] take [prep] [art] | 36 |
|
| 8 | must be take [prep] [art] | 36 |
|
