| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [vb pp] [pers pn] must [be] | 11 |
|
| 2 | [is] [vb pp] [pers pn] must be | 11 |
|
| 3 | [is] [vb pp] it must [be] | 11 |
|
| 4 | is [vb pp] [pers pn] must [be] | 11 |
|
