| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that [modal v] [verb] [art] | 1660 |
|
| 2 | system [modal v] [verb] [art] | 139 |
|
| 3 | system that [modal v] [verb] | 75 |
|
| 4 | system that [verb] [art] | 68 |
|
