| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can be trace [prep] | 98 |
|
| 2 | can [adv] be [prep] | 91 |
|
| 3 | can [adv] be trace | 31 |
|
| 4 | [adv] be trace [prep] | 27 |
|
