| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] been [adv] involved [prep] | 5 |
|
| 2 | who [verb] [been] [adv] involved [prep] | 5 |
|
| 3 | who have [been] [adv] involved [prep] | 5 |
|
| 4 | who [verb] [been] [adv] involved [prep] | 5 |
|
