| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [adv] while [v-ing] | 54 |
|
| 2 | [noun sg] [adv] while [verb] | 31 |
|
| 3 | [noun pl] [adv] while [verb] | 21 |
|
| 4 | [noun] ago while [verb] | 5 |
|
