| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [is] | 90 |
|
| 2 | must [verb] is | 90 |
|
| 3 | must [verb] [is] | 90 |
|
| 4 | must do [is] | 31 |
|
| 5 | must do [is] | 31 |
|
| 6 | must decide [is] | 5 |
|
| 7 | must decide [is] | 5 |
|
