| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] | 67456 |
|
| 2 | have [vb pp] | 49814 |
|
| 3 | [verb] happened | 4435 |
|
| 4 | have happened | 4405 |
|
| 5 | have happen | 644 |
|
| 6 | [vb infin] happened | 643 |
|
