| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what it must be [prep] [to-vb] | 9 |
|
| 2 | [Wh det] it must be [prep] [to-vb] | 9 |
|
| 3 | what it must be [prep] [to-vb] | 9 |
|
| 4 | [pron] it must be [prep] [to-vb] | 9 |
|
| 5 | it must be [prep] [noun] [to-vb] | 7 |
|
| 6 | it must be [prep] parliament [to-vb] | 6 |
|
| 7 | it must be [prep] parliament [to-vb] | 6 |
|
| 8 | it must be [prep] [noun sg] [to-vb] | 6 |
|
