| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must decide whether [pers pn] [vb base] | 12 |
|
| 2 | must [vb infin] whether they [vb base] | 11 |
|
| 3 | must [vb infin] whether [pers pn] wish | 8 |
|
