| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] when he [vb past] [pers pn] | 5 |
|
| 2 | [was/were] [v-ing] when he [verb] [pers pn] | 5 |
|
| 3 | was [v-ing] when he [verb] [pers pn] | 5 |
|
