| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] have occurred [adv] | 13 |
|
| 2 | [Wh det] have occur [adv] | 12 |
|
| 3 | which have occur [adv] | 11 |
|
| 4 | [Wh det] have occur [adv] | 8 |
|
| 5 | [Wh det] have occur either | 6 |
|
| 6 | [Wh det] have occur either | 6 |
|
