| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [been] [num] [prep] | 21 |
|
| 2 | [vb past] [been] [num] [prep] [det] | 20 |
|
| 3 | it [vb past] [been] [prep] [det] | 15 |
|
| 4 | it [vb past] [num] [prep] [det] | 5 |
|
