| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be traced to a | 11 |
|
| 2 | [vb mod] be traced to a | 11 |
|
| 3 | can be traced to a | 9 |
|
| 4 | can be traced to a | 9 |
|
| 5 | be traced [adv] to a | 9 |
|
| 6 | be traced [adv prt] to a | 9 |
|
| 7 | be traced back to a | 9 |
|
| 8 | be traced back to a | 9 |
|
| 9 | be traced to a [adj] | 8 |
|
| 10 | be traced to a [adj] | 8 |
|
| 11 | be traced to a [noun] | 6 |
|
| 12 | be traced to a [noun sg] | 6 |
|
