| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [modal v] have be [v-ing] [prep] | 32 |
|
| 2 | [noun] must have be [v-ing] [prep] | 19 |
|
| 3 | [noun prp] must have be [verb] [prep] | 18 |
|
| 4 | [noun prp] must [verb] be [v-ing] [prep] | 7 |
|
| 5 | [noun prp] must have be [v-ing] [prep] | 7 |
|
| 6 | [noun prp] must have [be] [v-ing] [prep] | 7 |
|
