| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have happen be | 117 |
|
| 2 | have happened [be] | 111 |
|
| 3 | have happen [is] | 80 |
|
| 4 | have happen is | 79 |
|
| 5 | has happen [be] | 41 |
|
| 6 | have happen [was/were] | 35 |
|
| 7 | have happen was | 35 |
|
| 8 | had happen [be] | 31 |
|
| 9 | 's happen [be] | 25 |
|
| 10 | to have happen [be] | 10 |
|
| 11 | have happen [be] | 8 |
|
| 12 | have to happen [be] | 5 |
|
