| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must be [vb pp] [prep] [art] | 88 |
|
| 2 | which [modal v] be [vb pp] at [art] | 70 |
|
| 3 | which [vb mod] be [vb pp] at [art] | 70 |
|
| 4 | [pron] must be [vb pp] at [art] | 23 |
|
| 5 | which must be [verb] at [art] | 9 |
|
| 6 | which must [be] [vb pp] at [art] | 8 |
|
| 7 | which must be [vb pp] at [art] | 8 |
|
| 8 | which must be [vb pp] at [art] | 8 |
|
| 9 | which must be [vb pp] at [art] | 8 |
|
| 10 | which must [be] [vb pp] at [art] | 8 |
|
