| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [vb past] back | 29 |
|
| 2 | [num] [vb -s] back | 18 |
|
| 3 | [num] [vb base] back | 16 |
|
| 4 | two [verb] back | 13 |
|
| 5 | [num] come back | 13 |
|
| 6 | [num] [v-ing] back | 9 |
|
| 7 | [num] came back | 8 |
|
| 8 | [num] [to-vb] back | 8 |
|
| 9 | [num] go back | 8 |
|
| 10 | [num] look back | 7 |
|
| 11 | one [verb] back | 5 |
|
