| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] a while | 261 |
|
| 2 | [Wh det] [prep] a [noun] | 224 |
|
| 3 | [Wh det] [prep] a [noun sg] | 207 |
|
| 4 | [Wh det] [prep] [art] while | 5 |
|
| 5 | [Wh det] [prep] a while | 5 |
|
| 6 | [Wh det] [prep] [art] while | 5 |
|
| 7 | [Wh det] [prep] a while | 5 |
|
