| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] [prep] this | 65 |
|
| 2 | must [be] [vb pp] at this | 11 |
|
| 3 | must [be] [vb pp] in this | 11 |
|
| 4 | must [be] made [prep] this | 8 |
|
| 5 | must [be] [vb pp] to this | 7 |
|
| 6 | must [be] [vb pp] by this | 6 |
|
| 7 | must [be] [vb pp] with this | 5 |
|
| 8 | must [be] seen [prep] this | 5 |
|
| 9 | must [be] [vb pp] of this | 5 |
|
