| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether it [verb] | 538 |
|
| 2 | whether it [vb -s] | 384 |
|
| 3 | [conj] it occurs | 115 |
|
| 4 | [subord] it occurs | 95 |
|
| 5 | whether it occurs | 5 |
|
| 6 | whether [pron] occurs | 5 |
|
| 7 | whether it occur | 5 |
|
