| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [to-vb] [art] | 7104 |
|
| 2 | [to-vb] whether [art] | 942 |
|
| 3 | [conj] whether [art] | 494 |
|
| 4 | [conj] [to-vb] whether | 102 |
|
