| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] [prep] [art] end | 17 |
|
| 2 | must be [vb pp] [prep] [art] end | 17 |
|
| 3 | must be [vb pp] [prep] [art] end | 17 |
|
| 4 | must be [vb pp] [prep] the end | 16 |
|
| 5 | must be [vb pp] by [art] end | 9 |
|
| 6 | must be [vb pp] by [art] end | 9 |
|
| 7 | must be [vb pp] at [art] end | 6 |
|
| 8 | must be [vb pp] at [art] end | 6 |
|
