| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] period [prep] the | 390 |
|
| 2 | [prep] [art] short period [prep] | 116 |
|
| 3 | [art] short period [prep] the | 12 |
|
| 4 | [prep] [art] short [prep] the | 5 |
|
