| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] a [noun sg] | 11644 |
|
| 2 | [prep] whether a [noun sg] | 154 |
|
| 3 | [prep] [v-ing] whether a | 79 |
|
| 4 | [v-ing] whether a [noun sg] | 77 |
|
| 5 | [prep] [v-ing] whether [noun sg] | 29 |
|
