| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system that [vb mod] enable | 7 |
|
| 2 | system that [modal v] enable | 7 |
|
| 3 | system that [modal v] enable | 7 |
|
| 4 | system that [modal v] enable | 7 |
|
| 5 | system that will enable | 6 |
|
| 6 | system that will enable | 6 |
|
