| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which can [be] traced [adv prt] [prep] | 8 |
|
| 2 | [Wh det] can [be] traced [adv prt] [prep] | 8 |
|
| 3 | [Wh det] can [be] traced [adv prt] [prep] | 8 |
|
| 4 | [Wh det] can be traced [adv prt] [prep] | 8 |
|
| 5 | [Wh det] can [be] traced back [prep] | 8 |
|
| 6 | [Wh det] can [be] traced [adv prt] to | 7 |
|
| 7 | [Wh det] can [be] traced [adv prt] to | 7 |
|
