| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it must [verb] [be] [prep] | 5 |
|
| 2 | [coord] it must [verb] be [prep] | 5 |
|
| 3 | [coord] it must [verb] been [prep] | 5 |
|
| 4 | [coord] it must have [be] [prep] | 5 |
|
| 5 | [coord] it must [verb] [been] [prep] | 5 |
|
| 6 | [coord] it must [vb infin] [be] [prep] | 5 |
|
| 7 | [coord] it must have [be] [prep] | 5 |
|
