| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] [prep] [det] period | 28 |
|
| 2 | [n mass] [prep] this period | 20 |
|
| 3 | [n mass] [prep] this period | 20 |
|
| 4 | [n mass] [prep] that period | 7 |
|
| 5 | [n mass] [prep] that period | 7 |
|
| 6 | [n mass] during [adj] period | 6 |
|
| 7 | [n mass] from [adj] period | 5 |
|
| 8 | [n mass] of [adj] period | 5 |
|
| 9 | works [prep] [adj] period | 5 |
|
