| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be whether | 22 |
|
| 2 | [prep] [be] whether | 22 |
|
| 3 | to [be] whether | 14 |
|
| 4 | [prep] is whether | 10 |
|
| 5 | [prep] be whether | 10 |
|
| 6 | [prep] [be] whether | 10 |
|
| 7 | [prep] [is] whether | 10 |
|
