| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] it have been | 75 |
|
| 2 | [adj] it had been | 30 |
|
| 3 | [adj] it has been | 28 |
|
| 4 | [adj] it 's been | 16 |
|
| 5 | difficult it have been | 8 |
|
| 6 | sure it have been | 6 |
|
