| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] when it [verb] | 7 |
|
| 2 | be [v-ing] when it [verb] | 7 |
|
| 3 | be [v-ing] when it [vb past] | 6 |
|
| 4 | was [v-ing] when it [verb] | 6 |
|
