| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [noun] for [verb] | 834 |
|
| 2 | [verb] [art] mechanism for [verb] | 34 |
|
| 3 | [verb] a mechanism [prep] [verb] | 23 |
|
| 4 | [verb] a mechanism for [verb] | 23 |
|
| 5 | [verb] a mechanism [prep] [verb] | 23 |
|
