| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not seen him since | 13 |
|
| 2 | have not seen him since | 13 |
|
| 3 | [vb base] not seen him since | 9 |
|
| 4 | have not seen him since | 7 |
|
| 5 | not seen him since [adj] | 5 |
|
