| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] which it must | 10 |
|
| 2 | [noun sg] [prep] which it must | 8 |
|
| 3 | [prep] which it must [be] | 6 |
|
| 4 | [prep] which it must [be] | 6 |
|
| 5 | [prep] which it must be | 6 |
|
| 6 | [prep] which it must be | 6 |
|
| 7 | [prep] which it must [verb] | 5 |
|
| 8 | [prep] which it must [vb infin] | 5 |
|
