| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] lead to the development [prep] | 17 |
|
| 2 | has lead to the development [prep] | 17 |
|
| 3 | [vb -s] led to the development [prep] | 17 |
|
| 4 | [vb -s] lead to the development of | 16 |
|
