| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | date back [prep] the [adj] | 151 |
|
| 2 | [adv] back [prep] the [adj] | 144 |
|
| 3 | [adv] date [prep] the [adj] | 40 |
|
| 4 | [adv] date back [prep] the | 10 |
|
