| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [prep] a [adj] | 445 |
|
| 2 | when it [vb past] [prep] [adj] | 33 |
|
| 3 | when it [vb past] [prep] a | 31 |
|
| 4 | when it [vb past] a [adj] | 15 |
|
