| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] for a time | 39 |
|
| 2 | [Wh det] for a [noun] | 28 |
|
| 3 | [Wh det] for a [noun sg] | 28 |
|
| 4 | [Wh det] for [art] time | 11 |
|
| 5 | [Wh det] [prep] a time | 11 |
|
| 6 | [Wh det] for a time | 9 |
|
