| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] you must [vb infin] | 72 |
|
| 2 | [Wh det] you must [verb] | 72 |
|
| 3 | what you must [verb] | 42 |
|
| 4 | which you must [verb] | 29 |
|
| 5 | [Wh det] you must do | 24 |
|
| 6 | [Wh det] you must do | 24 |
|
| 7 | [Wh det] you must have | 8 |
|
| 8 | [Wh det] you must have | 8 |
|
