| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] this do occur | 7 |
|
| 2 | [conj] this [verb] occur | 7 |
|
| 3 | [subord] this [verb] occur | 6 |
|
| 4 | [conj] this does occur | 5 |
|
| 5 | [conj] this [vb -s] occur | 5 |
|
