| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has led to a [noun] | 83 |
|
| 2 | has led [prep] a [noun sg] | 79 |
|
| 3 | has led [prep] a fall | 5 |
|
| 4 | has led [prep] a fall | 5 |
|
