| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] be [det] | 100 |
|
| 2 | must [verb] be [det] | 100 |
|
| 3 | must have be [det] | 93 |
|
| 4 | must [verb] been [det] | 93 |
|
| 5 | must have be [det] | 92 |
|
| 6 | must [verb] be some | 43 |
|
| 7 | must [verb] be many | 20 |
|
| 8 | must [verb] is [det] | 6 |
|
| 9 | must [verb] be that | 6 |
|
| 10 | must [verb] be several | 6 |
|
| 11 | must [verb] be those | 5 |
|
