| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what must [vb infin] | 54 |
|
| 2 | [prep] [Wh det] must have | 49 |
|
| 3 | of [Wh det] must [vb infin] | 29 |
|
| 4 | [prep] which must [vb infin] | 14 |
|
| 5 | in [Wh det] must [vb infin] | 12 |
|
| 6 | to [Wh det] must [vb infin] | 7 |
|
| 7 | for [Wh det] must [vb infin] | 6 |
|
| 8 | [prep] [Wh det] must rank | 5 |
|
