| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that the [adj] period [is] | 5 |
|
| 2 | that [art] [adj] period is | 5 |
|
| 3 | that [art] [adj] period [is] | 5 |
|
| 4 | that [art] [adj] period [is] | 5 |
|
