| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the [det] [noun] | 8071 |
|
| 2 | [prep] the [det] period | 737 |
|
| 3 | [prep] the [det] period | 737 |
|
| 4 | at the [adj] period | 20 |
|
| 5 | at [art] [det] period | 13 |
|
| 6 | at the [det] period | 13 |
|
| 7 | at [art] [det] period | 13 |
|
| 8 | at the [det] period | 13 |
|
