| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have be [v-ing] [det] | 8 |
|
| 2 | [pron] must have be [v-ing] [det] | 8 |
|
| 3 | [pron] must [vb infin] be [v-ing] [det] | 8 |
|
| 4 | [pron] must [verb] be [v-ing] [det] | 8 |
|
| 5 | [pron] must be [v-ing] [prep] [det] | 9 |
|
| 6 | [pron] must be [v-ing] [prep] [det] | 9 |
|
| 7 | [pron] must be [v-ing] [det] [noun] | 6 |
|
| 8 | [pron] must be [v-ing] [det] [noun sg] | 5 |
|
