| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be while he [was/were] [verb] | 7 |
|
| 2 | it be while he [was/were] [v-ing] | 7 |
|
| 3 | it be while he [was/were] [prep] | 6 |
|
| 4 | it be while he [was/were] [prep] | 6 |
|
