| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | played a key role in | 34 |
|
| 2 | played a key role in | 22 |
|
| 3 | plays a key role in | 19 |
|
| 4 | play a key role in | 17 |
|
| 5 | playing a key role in | 11 |
|
| 6 | to play a key role in | 9 |
|
| 7 | play a key role in | 7 |
|
