| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] [prep] the same period | 42 |
|
| 2 | [n mass] [prep] the [det] period | 42 |
|
| 3 | [n mass] in the [det] period | 21 |
|
| 4 | [n mass] over the [det] period | 8 |
|
| 5 | [n mass] on the [det] period | 6 |
|
