| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [num] [noun pl] | 454 |
|
| 2 | [vb past] [been] [num] [noun pl] | 153 |
|
| 3 | it [vb past] [been] [num] | 70 |
|
| 4 | it [vb past] [been] [noun pl] | 17 |
|
