| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [been] a [adj] | 340 |
|
| 2 | it [vb past] [verb] a [adj] | 296 |
|
| 3 | [vb past] [been] [verb] a [adj] | 272 |
|
| 4 | it [vb past] [been] [verb] [adj] | 69 |
|
| 5 | it [vb past] [been] [verb] a | 17 |
|
