| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] when | 132 |
|
| 2 | it [vb past] when | 132 |
|
| 3 | it did when | 19 |
|
| 4 | it happened when | 14 |
|
| 5 | it started when | 12 |
|
| 6 | it began when | 10 |
|
| 7 | it had when | 10 |
|
| 8 | it came when | 9 |
|
