| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [adj] we must [verb] | 6 |
|
| 2 | [to-vb] [adj] we must [vb infin] | 6 |
|
| 3 | [to-vb] [det] we must [verb] | 5 |
|
