| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can [verb] their | 986 |
|
| 2 | can [vb infin] their | 974 |
|
| 3 | can trace [pron] | 28 |
|
| 4 | [modal v] trace their | 9 |
|
| 5 | can trace their | 8 |
|
