| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] back [prep] the [num ord] | 56 |
|
| 2 | [vb -s] back to [art] [num ord] | 51 |
|
| 3 | dates back [prep] [art] [num ord] | 29 |
|
| 4 | goes back [prep] [art] [num ord] | 16 |
|
| 5 | [vb -s] back [prep] [art] first | 6 |
|
| 6 | [vb -s] back [prep] [art] 13th | 5 |
|
