| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] some | 15 |
|
| 2 | must be [verb] some | 15 |
|
| 3 | must [be] [verb] some | 15 |
|
| 4 | must [be] [verb] some | 15 |
|
| 5 | must [be] [vb pp] some | 8 |
|
| 6 | must [be] [v-ing] some | 5 |
|
