| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [conj] it be | 65 |
|
| 2 | must [verb] [conj] it be | 65 |
|
| 3 | [modal v] know [conj] it be | 26 |
|
| 4 | must know [conj] [pron] be | 18 |
|
| 5 | must know [conj] it be | 5 |
|
| 6 | must know [conj] it [be] | 5 |
|
