| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [adj] period [vb mod] [vb infin] | 12 |
|
| 2 | the [adj] period [modal v] [vb infin] | 12 |
|
| 3 | the [adj] period [modal v] [vb infin] | 9 |
|
