| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [pron] [modal v] be | 124 |
|
| 2 | be [v-ing] [pron] [vb mod] be | 124 |
|
| 3 | be [verb] [pron] must be | 45 |
|
| 4 | be [v-ing] [pron] must be | 8 |
|
| 5 | be [v-ing] [pron] must [be] | 8 |
|
| 6 | [be] [v-ing] [pron] must be | 8 |
|
