| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which can [vb infin] | 1017 |
|
| 2 | system which [modal v] [vb infin] | 106 |
|
| 3 | system [pron] can [vb infin] | 21 |
|
| 4 | system which can [verb] | 13 |
|
