| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] been fighting | 20 |
|
| 2 | who [verb] [been] fighting | 20 |
|
| 3 | who have [been] fighting | 20 |
|
| 4 | who [vb base] [been] fighting | 10 |
|
| 5 | who have [been] fighting | 8 |
|
| 6 | who [vb past] [been] fighting | 5 |
|
| 7 | who [vb -s] [been] fighting | 5 |
|
