| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but which have been | 25 |
|
| 2 | but which have be | 25 |
|
| 3 | but which have [been] | 25 |
|
| 4 | but which have [be] | 25 |
|
| 5 | but which had [be] | 16 |
|
| 6 | but which has [be] | 6 |
|
