| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] the [num ord] [noun] | 289 |
|
| 2 | dating [prep] the [num ord] [noun] | 62 |
|
| 3 | dating back [prep] the [num ord] | 32 |
|
| 4 | dating back [prep] the [noun] | 19 |
|
