| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] led [prep] a | 50 |
|
| 2 | had led [prep] a | 50 |
|
| 3 | [vb past] led to a | 48 |
|
| 4 | [vb past] led to a | 48 |
|
