| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] [art] period [prep] | 643 |
|
| 2 | [verb] up [prep] [art] period | 18 |
|
| 3 | up [prep] [art] period [prep] | 16 |
|
| 4 | [verb] up [prep] [art] [prep] | 6 |
|
