| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | issue which [verb] been | 23 |
|
| 2 | issue which have been | 23 |
|
| 3 | issues which [verb] been | 15 |
|
| 4 | issue which [vb base] been | 10 |
|
| 5 | issue which have been | 10 |
|
| 6 | issue which [verb] been | 8 |
|
| 7 | issue which [vb past] been | 8 |
|
| 8 | issue which had been | 8 |
|
| 9 | issue which [vb -s] been | 5 |
|
| 10 | issue which has been | 5 |
|
