| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] by which [pron] [verb] | 217 |
|
| 2 | [noun sg] by which [pron] [verb] | 137 |
|
| 3 | mechanism by which [pron] [verb] | 8 |
|
| 4 | mechanism [prep] which [pron] [verb] | 8 |
|
| 5 | mechanism by [pron] [pron] [verb] | 6 |
|
| 6 | mechanism by [Wh det] [pron] [verb] | 6 |
|
| 7 | mechanism by which [pron] [verb] | 6 |
|
