| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] traced [adv prt] | 112 |
|
| 2 | [modal v] be traced [adv prt] | 112 |
|
| 3 | [modal v] [be] traced back | 110 |
|
| 4 | can [be] traced [adv prt] | 100 |
|
| 5 | can [be] traced [adv prt] | 100 |
|
| 6 | may [be] traced [adv prt] | 6 |
|
| 7 | may [be] traced [adv prt] | 6 |
|
