| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] [be] [verb] | 6658 |
|
| 2 | which [vb mod] [be] [vb pp] | 6502 |
|
| 3 | [pron] [vb mod] [be] kept | 157 |
|
| 4 | which [vb mod] [be] keep | 29 |
|
| 5 | which [modal v] [be] kept | 29 |
|
