| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can be [verb] | 39872 |
|
| 2 | can be [vb pp] | 39670 |
|
| 3 | [vb mod] be traced | 314 |
|
| 4 | [modal v] be traced | 314 |
|
| 5 | can be trace | 260 |
|
| 6 | can be traced | 259 |
|
| 7 | can be traced | 259 |
|
| 8 | can [be] traced | 259 |
|
| 9 | can [be] traced | 259 |
|
