| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb -s] back to the [adj] | 17 |
|
| 2 | which dates [adv prt] to the [adj] | 11 |
|
| 3 | which [vb -s] [adv prt] to the [num ord] | 10 |
|
| 4 | which [vb -s] [adv prt] to the [adj] | 8 |
|
