| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [is] [vb infin] for | 6 |
|
| 2 | [vb mod] [verb] [is] [vb infin] for | 6 |
|
| 3 | [verb] [is] [vb infin] for [pron] | 5 |
|
