| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have produced a [n mass] [prep] | 9 |
|
| 2 | have produced a [n mass] of | 9 |
|
| 3 | have produced a [n mass] [prep] | 9 |
|
| 4 | have produced a [n mass] of | 9 |
|
