| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] for | 172 |
|
| 2 | it have be [vb pp] for | 172 |
|
| 3 | it has be [vb pp] for | 100 |
|
| 4 | it had be [vb pp] for | 48 |
|
| 5 | it have be known for | 37 |
|
| 6 | it 's be [vb pp] for | 23 |
|
| 7 | it have be used for | 14 |
|
| 8 | it have be done for | 5 |
|
