| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] on [art] | 3782 |
|
| 2 | [be] concentrate on [art] | 124 |
|
| 3 | [be] concentrate [prep] [art] | 60 |
|
| 4 | [be] concentrate [prep] [art] | 60 |
|
| 5 | [be] concentrate on [art] | 29 |
|
| 6 | [be] concentrate on [art] | 29 |
|
