| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] be the | 159 |
|
| 2 | [vb infin] be the [num ord] | 93 |
|
| 3 | must be the [num ord] | 35 |
|
| 4 | must [vb infin] the [num ord] | 24 |
|
