| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [verb] for a while | 24 |
|
| 2 | they [verb] for [art] while | 24 |
|
| 3 | they [verb] for a while | 24 |
|
| 4 | they [verb] for [art] while | 20 |
|
| 5 | they [vb past] for [art] while | 19 |
|
