| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have | 5556 |
|
| 2 | who [modal v] have | 1308 |
|
| 3 | who must [vb infin] | 227 |
|
| 4 | who must [verb] | 227 |
|
| 5 | who must have | 80 |
|
