| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] if it [was/were] | 61 |
|
| 2 | [conj] [vb past] [prep] if it | 29 |
|
| 3 | [conj] [vb past] if it [was/were] | 18 |
|
