| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which had been | 1475 |
|
| 2 | issue which [verb] been | 23 |
|
| 3 | issue which have been | 23 |
|
| 4 | issue [pron] had been | 9 |
|
| 5 | issue which [vb past] been | 8 |
|
| 6 | issue which had be | 8 |
|
| 7 | issue which had [been] | 8 |
|
| 8 | issue which had [be] | 8 |
|
