| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | goes back to the [noun pl] | 20 |
|
| 2 | [vb -s] back to the days | 10 |
|
| 3 | [vb -s] back to the courts | 5 |
|
| 4 | dates back to the [noun pl] | 5 |
|
