| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | opens up the possibility [prep] [verb] | 8 |
|
| 2 | [vb -s] up the possibility [prep] [verb] | 8 |
|
| 3 | [vb -s] up the possibility [prep] [v-ing] | 8 |
|
| 4 | [vb -s] up the possibility of [verb] | 8 |
|
| 5 | [vb -s] up the possibility of [verb] | 8 |
|
