| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] [prep] [adj] to be | 9 |
|
| 2 | [modal v] [vb infin] [prep] [adj] to be | 9 |
|
| 3 | [modal v] [vb infin] [prep] [det] to be | 7 |
|
