| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [conj] it [is] | 571 |
|
| 2 | [verb] whether it [is] | 388 |
|
| 3 | [v-ing] whether it [be] | 64 |
|
| 4 | [v-ing] whether [pron] [is] | 61 |
|
