| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [v-ing] [prep] [det] | 477 |
|
| 2 | must have be [v-ing] [prep] | 81 |
|
| 3 | must have be [prep] [det] | 26 |
|
| 4 | must be [v-ing] [prep] [det] | 13 |
|
| 5 | must have be [v-ing] [det] | 12 |
|
