| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when he first [vb past] [prep] [noun] | 5 |
|
| 2 | when he [num ord] [vb past] [prep] [noun] | 5 |
|
| 3 | when he [num ord] [vb past] [prep] [noun] | 5 |
|
