| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [vb mod] [verb] [verb] | 2412 |
|
| 2 | [adj] [vb mod] [verb] [vb infin] | 83 |
|
| 3 | [adj] [vb mod] [verb] ensure | 14 |
|
| 4 | [adj] [modal v] [verb] ensure | 6 |
|
