| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [adv] be involved in | 7 |
|
| 2 | who [vb past] [adv] been involved [prep] | 7 |
|
| 3 | who had [adv] be involved [prep] | 7 |
|
| 4 | who [vb past] [adv] be involved [prep] | 7 |
|
