| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while he was [verb] on the | 7 |
|
| 2 | while he [be] [verb] on the | 7 |
|
| 3 | while he be [verb] on the | 7 |
|
| 4 | while he [was/were] [verb] on the | 7 |
|
| 5 | while he [verb] on the [noun] | 8 |
|
| 6 | while he [verb] on the [noun sg] | 8 |
|
