| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the [adj] period [modal v] [vb infin] | 10 |
|
| 2 | [prep] the [adj] period [modal v] [vb infin] | 10 |
|
| 3 | in the [adj] period [modal v] [vb infin] | 5 |
|
| 4 | in the [adj] period [modal v] [vb infin] | 5 |
|
| 5 | the [adj] period [pron] [modal v] [vb infin] | 5 |
|
| 6 | the [adj] period [modal v] [adv] [vb infin] | 6 |
|
