| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while [verb] for the [noun sg] | 28 |
|
| 2 | while [v-ing] for the [noun sg] | 27 |
|
| 3 | while wait for the [noun sg] | 13 |
|
| 4 | while waiting for the [noun sg] | 12 |
|
