| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [conj] [verb] [art] | 77 |
|
| 2 | [be] whether [verb] [art] | 16 |
|
| 3 | be whether [verb] [art] | 16 |
|
| 4 | [is] whether [verb] [art] | 10 |
|
