| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [verb] a [noun] | 47405 |
|
| 2 | must [verb] a [noun] | 1023 |
|
| 3 | must [verb] [verb] a | 439 |
|
| 4 | must [verb] [verb] [noun] | 374 |
|
