| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must [vb infin] | 354 |
|
| 2 | [Wh det] must have | 231 |
|
| 3 | what must [vb infin] | 103 |
|
| 4 | [Wh det] must include | 10 |
|
| 5 | [Wh det] must mean | 9 |
|
| 6 | [Wh det] must remain | 7 |
|
| 7 | [Wh det] must happen | 7 |
|
| 8 | [Wh det] must seem | 7 |
|
| 9 | [Wh det] must rank | 6 |
|
| 10 | [Wh det] must contain | 6 |
|
| 11 | [Wh det] must make | 6 |
|
| 12 | [Wh det] must exist | 5 |
|
| 13 | [Wh det] must come | 5 |
|
| 14 | [Wh det] must go | 5 |
|
