| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] been [vb pp] for [det] | 23 |
|
| 2 | it has [been] [vb pp] for [det] | 22 |
|
| 3 | it [vb -s] [been] [vb pp] for some | 13 |
|
| 4 | it [vb -s] [been] known for [det] | 13 |
|
| 5 | it [vb -s] [been] [vb pp] for many | 9 |
|
