| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] when | 279 |
|
| 2 | it [vb past] when | 132 |
|
| 3 | [pron] began when | 22 |
|
| 4 | it began [conj] | 19 |
|
| 5 | it began [subord] | 16 |
|
| 6 | it began when | 10 |
|
| 7 | it begin when | 10 |
|
