| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | open up the prospect [prep] | 15 |
|
| 2 | open up the prospect [prep] | 15 |
|
| 3 | open up the prospect of | 13 |
|
| 4 | open up the prospect of | 13 |
|
| 5 | opened up the prospect [prep] | 6 |
|
