| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] can [adv] be trace to | 6 |
|
| 2 | can [adv] be trace [adv prt] to | 8 |
|
| 3 | can [adv] be trace back to | 8 |
|
| 4 | can [adv] be trace back to | 8 |
|
| 5 | can [adv] be trace [adv] to | 8 |
|
| 6 | can [adv] be trace to [art] | 6 |
|
| 7 | can [adv] be trace to [art] | 6 |
|
