| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which dates [adv prt] [prep] the [adj] | 11 |
|
| 2 | which dates [adv prt] [prep] [art] [adj] | 11 |
|
| 3 | which dates [adv prt] to [art] [adj] | 11 |
|
| 4 | which dates back [prep] [art] [adj] | 11 |
|
| 5 | which dates [adv prt] [prep] [art] [num ord] | 8 |
|
