| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun] for [verb] | 1665 |
|
| 2 | [prep] [art] mechanism [prep] [verb] | 33 |
|
| 3 | [prep] [art] mechanism [prep] [verb] | 33 |
|
| 4 | [prep] [art] mechanism for [verb] | 32 |
|
