| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | during [adj] period [vb mod] [vb infin] | 5 |
|
| 2 | during [det] period [modal v] [vb infin] | 5 |
|
| 3 | during [adj] period [modal v] [vb infin] | 5 |
|
