| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] billion [prep] the same period | 6 |
|
| 2 | [n mass] billion [prep] the same period | 6 |
|
| 3 | [n mass] billion [prep] [art] same period | 6 |
|
| 4 | [n mass] billion [prep] [art] same period | 6 |
|
