| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] for the first time | 7 |
|
| 2 | which [vb past] for the first [noun sg] | 7 |
|
| 3 | which [vb past] for the first [noun] | 7 |
|
| 4 | which [vb past] for the first time | 7 |
|
