| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | features which [vb mod] be | 16 |
|
| 2 | features which [vb mod] [be] | 16 |
|
| 3 | features which [vb mod] be | 16 |
|
| 4 | features which can [be] | 6 |
|
