| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [noun sg] have [adv] occurred [prep] | 8 |
|
| 2 | [det] [noun] have [adv] occurred to | 6 |
|
| 3 | [det] [noun] had [adv] occurred [prep] | 6 |
|
