| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the period and | 52 |
|
| 2 | of [art] period and | 23 |
|
| 3 | for [art] period and | 13 |
|
| 4 | [prep] a period and | 12 |
|
| 5 | over [art] period and | 7 |
|
| 6 | in [art] period and | 6 |
|
| 7 | during [art] period and | 5 |
|
