| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] be [verb] [adj] | 35 |
|
| 2 | must [vb infin] [be] [verb] [adj] | 35 |
|
| 3 | must [verb] been [verb] [adj] | 34 |
|
| 4 | must [verb] [been] [verb] [adj] | 34 |
|
| 5 | must have [be] [verb] [adj] | 34 |
|
| 6 | must have [be] [verb] [adj] | 33 |
|
| 7 | must [verb] [be] [v-ing] [adj] | 22 |
|
| 8 | must [verb] [be] [verb] [det] | 18 |
|
| 9 | must [verb] [be] [verb] [adj] | 13 |
|
| 10 | must [verb] [be] [vb pp] [adj] | 10 |
|
| 11 | must [verb] [be] [verb] all | 5 |
|
| 12 | must [verb] [be] [verb] all | 5 |
|
