| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] happen at the time | 7 |
|
| 2 | be happen [prep] the time | 7 |
|
| 3 | [be] happening [prep] the time | 7 |
|
| 4 | [was/were] happen [prep] the time | 5 |
|
