| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [adj] | 52783 |
|
| 2 | have [adj] periods | 23 |
|
| 3 | [vb pp] [adj] periods | 19 |
|
| 4 | have [vb pp] periods | 8 |
|
