| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [prep] | 11869 |
|
| 2 | then [vb past] [prep] | 1676 |
|
| 3 | it then [vb past] | 137 |
|
| 4 | it then [prep] | 19 |
|
