| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which have been | 3601 |
|
| 2 | issue [pron] have been | 29 |
|
| 3 | issue which have [be] | 23 |
|
| 4 | issue which have be | 23 |
|
| 5 | issue which have [been] | 23 |
|
| 6 | issue which [verb] been | 23 |
|
