| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not seen for [num] [noun] | 10 |
|
| 2 | been seen for [num] [noun] | 8 |
|
| 3 | not been seen for [num] | 8 |
|
| 4 | not been for [num] [noun] | 8 |
|
