| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did not [adv] | 1751 |
|
| 2 | [verb] not back | 9 |
|
| 3 | do not back | 8 |
|
| 4 | did [adv] back | 5 |
|
| 5 | did not back | 5 |
|
| 6 | did not back | 5 |
|
| 7 | did not [adv prt] | 5 |
|
| 8 | [vb past] not back | 5 |
|
| 9 | did [not/n't] back | 5 |
|
