| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] happened be [adv] | 6 |
|
| 2 | what [adv] happened be [adv] | 6 |
|
| 3 | [Wh det] [adv] happened be [adv] | 6 |
|
| 4 | what [adv] happened be [adv] | 6 |
|
| 5 | [adv] happened [prep] be [adv] | 11 |
|
| 6 | [adv] happened to be [adv] | 11 |
|
| 7 | [adv] happened to be [adv] | 11 |
|
| 8 | [adv] happened [prep] be [adv] | 11 |
|
