| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [vb -s] [prep] [art] [adj] | 210 |
|
| 2 | what [vb -s] happened [prep] [art] | 127 |
|
| 3 | [vb -s] happened [prep] [art] [adj] | 71 |
|
| 4 | what [vb -s] happened [prep] [adj] | 52 |
|
