| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] mechanism for [verb] | 35 |
|
| 2 | a [adj] mechanism for [v-ing] | 35 |
|
| 3 | a [adj] mechanism for [verb] | 34 |
|
| 4 | a [adj] mechanism for [verb] | 22 |
|
| 5 | an [adj] mechanism for [verb] | 13 |
|
