| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [noun] | 242 |
|
| 2 | it had been [noun] | 142 |
|
| 3 | it have been [noun sg] | 106 |
|
| 4 | it have been [noun prp] | 100 |
|
| 5 | it has been [noun] | 47 |
|
| 6 | it 's been [noun] | 39 |
|
| 7 | it have been [noun pl] | 32 |
|
| 8 | it have been [noun] | 10 |
|
| 9 | it have been year | 7 |
|
| 10 | it have been years | 7 |
|
| 11 | it have been part | 5 |
|
| 12 | it have been part | 5 |
|
