| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have seen a [noun sg] | 25 |
|
| 2 | we have seen a [noun] | 24 |
|
| 3 | we have seen a [noun] | 14 |
|
| 4 | we 've seen a [noun] | 7 |
|
