| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | opened up the [noun] of | 13 |
|
| 2 | opened up the [noun sg] of | 12 |
|
| 3 | opened up the prospect of | 5 |
|
| 4 | opened up the possibility of | 5 |
|
| 5 | opened up the prospect of | 5 |
|
| 6 | opened up the possibility of | 5 |
|
