| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] must [vb infin] | 207 |
|
| 2 | [indef pn] [pron] must [vb infin] | 60 |
|
| 3 | [indef pn] which must [vb infin] | 7 |
|
| 4 | [indef pn] which [pron] must | 5 |
|
