| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] at [art] forefront | 15 |
|
| 2 | to [be] at [art] forefront | 15 |
|
| 3 | to [be] at [art] forefront | 15 |
|
| 4 | [prep] [be] at [art] forefront | 15 |
|
| 5 | [vb mod] [be] at [art] forefront | 9 |
|
| 6 | [modal v] [be] at [art] forefront | 9 |
|
| 7 | [be] at [art] forefront [prep] | 24 |
|
| 8 | [be] at [art] forefront [prep] | 24 |
|
| 9 | [be] at [art] forefront of | 22 |
|
| 10 | [be] at [art] forefront of | 22 |
|
