| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [art] [noun sg] is | 791 |
|
| 2 | [to-vb] whether [art] [noun sg] | 578 |
|
| 3 | [to-vb] [art] [noun sg] is | 519 |
|
| 4 | [to-vb] whether [noun sg] is | 18 |
|
