| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] whether it [is] | 106 |
|
| 2 | [v-ing] [prep] it [is] | 83 |
|
| 3 | [v-ing] whether it [is] | 40 |
|
| 4 | [v-ing] [prep] whether it | 31 |
|
