| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must [vb infin] | 354 |
|
| 2 | which must have | 156 |
|
| 3 | which must include | 10 |
|
| 4 | which must mean | 9 |
|
| 5 | which must remain | 6 |
|
| 6 | which must make | 6 |
|
| 7 | which must contain | 6 |
|
| 8 | which must come | 5 |
|
| 9 | which must exist | 5 |
|
