| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must [verb] | 355 |
|
| 2 | which must [vb infin] | 354 |
|
| 3 | [pron] must come | 226 |
|
| 4 | which [modal v] come | 121 |
|
| 5 | which must come | 5 |
|
