| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while it [is] [adv] [v-ing] | 9 |
|
| 2 | while it [is] [adv] [v-ing] | 9 |
|
| 3 | while it is [adv] [v-ing] | 8 |
|
| 4 | while it [is] still [v-ing] | 5 |
|
