| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] it have been | 75 |
|
| 2 | [adj] it [verb] been | 75 |
|
| 3 | [adj] it [vb -s] been | 44 |
|
| 4 | [adj] it [vb past] been | 31 |
|
| 5 | [adj] it had been | 30 |
|
| 6 | [adj] it has been | 28 |
|
| 7 | [adj] it 's been | 16 |
|
| 8 | difficult it [verb] been | 8 |
|
| 9 | sure it [verb] been | 6 |
|
