| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] happened in the past | 12 |
|
| 2 | [Wh det] happened in the past | 11 |
|
| 3 | what happened in the past | 10 |
|
| 4 | what happened in the past | 10 |
|
| 5 | that happened in the past | 6 |
|
| 6 | [that] happened in the past | 6 |
|
| 7 | [conj] happened in the past | 6 |
|
| 8 | that happened in the past | 6 |
|
