| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] can be [vb pp] to | 114 |
|
| 2 | [adj] system can be [vb pp] | 56 |
|
| 3 | [adj] system be [vb pp] to | 33 |
|
| 4 | system can be [vb pp] to | 13 |
|
