| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] been [vb pp] on | 50 |
|
| 2 | it has be [vb pp] on | 42 |
|
| 3 | it 's be [vb pp] on | 8 |
|
| 4 | it [vb -s] be based on | 5 |
|
