| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] [be] at the forefront | 9 |
|
| 2 | [prep] [be] at the forefront [prep] | 14 |
|
| 3 | [prep] [be] at the forefront of | 14 |
|
| 4 | [prep] [be] at the forefront of | 14 |
|
| 5 | [prep] [be] at the forefront [prep] | 14 |
|
