| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] dates [adv prt] [prep] [num] | 10 |
|
| 2 | which dates [adv prt] [prep] [adj] | 10 |
|
| 3 | [Wh det] dates back [prep] [adj] | 10 |
|
| 4 | [Wh det] dates [adv prt] to [adj] | 10 |
|
