| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adj] system [modal v] provide | 5 |
|
| 2 | [art] [adj] system [modal v] provide | 5 |
|
| 3 | the [adj] system [modal v] provide | 5 |
|
| 4 | the [adj] system [modal v] provide | 5 |
|
| 5 | [adj] system [modal v] provide [adj] | 5 |
|
