| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [been] [vb pp] on a | 10 |
|
| 2 | it has been [verb] on a | 10 |
|
| 3 | it has [been] [verb] on a | 10 |
|
| 4 | it has [been] [verb] on a | 10 |
|
