| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [adv] [verb] | 58441 |
|
| 2 | did [adv] [vb infin] | 58151 |
|
| 3 | [verb] [adv] happen | 497 |
|
| 4 | do [adv] happen | 496 |
|
| 5 | did [adv] happen | 209 |
|
| 6 | [vb past] [adv] happen | 209 |
|
