| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] has occurred | 70 |
|
| 2 | [Wh det] [vb -s] occurred | 47 |
|
| 3 | what [vb -s] occurred | 24 |
|
| 4 | what [vb -s] occurred | 24 |
|
| 5 | which [vb -s] occurred | 23 |
|
| 6 | [pers pn] [vb -s] occurred | 23 |
|
| 7 | which [vb -s] occurred | 23 |
|
| 8 | it [vb -s] occurred | 22 |
|
| 9 | it [vb -s] occurred | 22 |
|
