| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [v-ing] [pron] [prep] | 444 |
|
| 2 | must have be [v-ing] [prep] | 81 |
|
| 3 | must have be [v-ing] [pron] | 46 |
|
| 4 | must have be [pron] [prep] | 20 |
|
| 5 | must be [v-ing] [pron] [prep] | 10 |
|
