| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did n't [vb infin] back | 133 |
|
| 2 | did not [vb infin] back | 66 |
|
| 3 | did not come back | 59 |
|
| 4 | did not go back | 35 |
|
| 5 | did not look back | 26 |
|
| 6 | did not get back | 16 |
|
| 7 | did not smile back | 9 |
|
| 8 | did not move back | 5 |
|
