| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [vb pp] [conj] [art] | 1093 |
|
| 2 | [prep] be [verb] whether [art] | 39 |
|
| 3 | [prep] be [vb pp] whether [art] | 38 |
|
| 4 | [prep] [be] [vb pp] whether [art] | 38 |
|
