| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] seen a [noun sg] | 53 |
|
| 2 | have [adv] seen a [noun] | 36 |
|
| 3 | have never seen a [noun] | 23 |
|
| 4 | have never seen a [noun] | 23 |
|
| 5 | have not seen a [noun] | 21 |
|
| 6 | have [not/n't] seen a [noun] | 21 |
|
| 7 | have n't seen a [noun] | 17 |
|
