| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] happened to | 869 |
|
| 2 | have happened to | 862 |
|
| 3 | [vb -s] happened to | 437 |
|
| 4 | [vb past] happened to | 316 |
|
| 5 | had happened to | 314 |
|
| 6 | has happened to | 225 |
|
| 7 | 's happened to | 212 |
|
| 8 | [vb infin] happened to | 93 |
|
| 9 | have happened to | 86 |
|
| 10 | [vb base] happened to | 15 |
|
| 11 | have happened to | 14 |
|
| 12 | [to-vb] happened to | 7 |
|
| 13 | to have happened to | 7 |
|
| 14 | think happened to | 5 |
|
