| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have be [v-ing] [det] | 509 |
|
| 2 | [pron] must have be [v-ing] | 186 |
|
| 3 | [pron] must have be [det] | 79 |
|
| 4 | must have be [v-ing] [det] | 12 |
|
| 5 | [pron] must be [v-ing] [det] | 9 |
|
