| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] since [num] | 51 |
|
| 2 | have [vb pp] since 1979 | 7 |
|
| 3 | have [vb pp] since 1979 | 7 |
|
| 4 | have [vb pp] since [det] | 5 |
|
| 5 | have occurred since [adj] | 5 |
|
