| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [v-ing] [art] | 2103 |
|
| 2 | while [v-ing] [art] | 1381 |
|
| 3 | [vb pp] while [v-ing] | 240 |
|
| 4 | [vb pp] while [art] | 188 |
|
