| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] date back [prep] [art] | 10 |
|
| 2 | [noun] date back [prep] [art] | 10 |
|
| 3 | [pron] date back [prep] [art] | 10 |
|
| 4 | which date back [prep] [art] | 8 |
|
| 5 | [Wh det] date back [prep] [art] | 8 |
|
| 6 | which date back [prep] [art] | 8 |
|
| 7 | date back [prep] [art] [adj] | 20 |
|
| 8 | date back [prep] [art] [noun] | 8 |
|
| 9 | date back [prep] [art] [num ord] | 8 |
|
| 10 | date back [prep] [art] [adj] | 8 |
|
| 11 | date back [prep] [art] [noun sg] | 5 |
|
