| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] a [noun sg] | 50425 |
|
| 2 | [prep] whether a [noun sg] | 154 |
|
| 3 | [vb pp] whether a [noun sg] | 20 |
|
| 4 | [vb pp] [prep] whether a | 8 |
|
