| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [be] [vb pp] that | 586 |
|
| 2 | it [be] [vb pp] [adv] that | 117 |
|
| 3 | it must [be] [vb pp] [adv] | 71 |
|
| 4 | must [be] [vb pp] [adv] that | 42 |
|
